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48391469487 = 32149301911953
BaseRepresentation
bin101101000100010110…
…110011100110101111
311121220111002100120200
4231010112303212233
51243101204010422
634121501044543
73332120463264
oct550426634657
9147814070520
1048391469487
11195827a5299
129466256753
13474273b21a
1424b0c5926b
1513d355d2ac
hexb445b39af

48391469487 has 24 divisors (see below), whose sum is σ = 70397106000. Its totient is φ = 32031168768.

The previous prime is 48391469471. The next prime is 48391469491. The reversal of 48391469487 is 78496419384.

48391469487 is a `hidden beast` number, since 4 + 8 + 3 + 9 + 146 + 9 + 487 = 666.

It is not a de Polignac number, because 48391469487 - 24 = 48391469471 is a prime.

It is a super-2 number, since 2×483914694872 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48391469407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4042503 + ... + 4054455.

It is an arithmetic number, because the mean of its divisors is an integer number (2933212750).

Almost surely, 248391469487 is an apocalyptic number.

48391469487 is a deficient number, since it is larger than the sum of its proper divisors (22005636513).

48391469487 is a wasteful number, since it uses less digits than its factorization.

48391469487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15127 (or 15124 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The spelling of 48391469487 in words is "forty-eight billion, three hundred ninety-one million, four hundred sixty-nine thousand, four hundred eighty-seven".

Divisors: 1 3 9 149 447 1341 3019 9057 11953 27171 35859 107577 449831 1349493 1780997 4048479 5342991 16028973 36086107 108258321 324774963 5376829943 16130489829 48391469487