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20472589413648 = 24321031380298639
BaseRepresentation
bin1001010011110101001010…
…11010110110110100010000
32200111011022221211011021100
410221322211122312310100
510140410330342214043
6111312551105224400
74212044564532321
oct451724532666420
980434287734240
1020472589413648
116583416006289
122367884932100
13b56731673c38
1450ac42cc0448
1525781437dcd3
hex129ea56b6d10

20472589413648 has 60 divisors (see below), whose sum is σ = 57851076599680. Its totient is φ = 6757942131648.

The previous prime is 20472589413643. The next prime is 20472589413671. The reversal of 20472589413648 is 84631498527402.

20472589413648 is a `hidden beast` number, since 2 + 0 + 4 + 7 + 2 + 589 + 4 + 1 + 3 + 6 + 48 = 666.

It is not an unprimeable number, because it can be changed into a prime (20472589413643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 690134488 + ... + 690164151.

It is a 1-persistent number, because it is pandigital, but 2⋅20472589413648 = 40945178827296 is not.

Almost surely, 220472589413648 is an apocalyptic number.

It is an amenable number.

20472589413648 is an abundant number, since it is smaller than the sum of its proper divisors (37378487186032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20472589413648 is a wasteful number, since it uses less digits than its factorization.

20472589413648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380298756 (or 1380298747 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 63.

The spelling of 20472589413648 in words is "twenty trillion, four hundred seventy-two billion, five hundred eighty-nine million, four hundred thirteen thousand, six hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 103 144 206 309 412 618 824 927 1236 1648 1854 2472 3708 4944 7416 14832 1380298639 2760597278 4140895917 5521194556 8281791834 11042389112 12422687751 16563583668 22084778224 24845375502 33127167336 49690751004 66254334672 99381502008 142170759817 198763004016 284341519634 426512279451 568683039268 853024558902 1137366078536 1279536838353 1706049117804 2274732157072 2559073676706 3412098235608 5118147353412 6824196471216 10236294706824 20472589413648