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20708227491050 = 25211109345424979
BaseRepresentation
bin1001011010101100000101…
…00010110010010011101010
32201022200112222102202100102
410231112002202302103222
510203240422214203200
6112013121155105402
74235056116251531
oct455260242622352
981280488382312
1020708227491050
116664345613510
1223a54875a2262
13b72a15155078
145183d8127318
1525da063c36d5
hex12d5828b24ea

20708227491050 has 48 divisors (see below), whose sum is σ = 42404370544800. Its totient is φ = 7461179524800.

The previous prime is 20708227490887. The next prime is 20708227491097. The reversal of 20708227491050 is 5019472280702.

It is a junction number, because it is equal to n+sod(n) for n = 20708227490986 and 20708227491004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172652540 + ... + 172772439.

It is an arithmetic number, because the mean of its divisors is an integer number (883424386350).

Almost surely, 220708227491050 is an apocalyptic number.

20708227491050 is an abundant number, since it is smaller than the sum of its proper divisors (21696143053750).

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

20708227491050 is a wasteful number, since it uses less digits than its factorization.

20708227491050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345425111 (or 345425106 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 20708227491050 in words is "twenty trillion, seven hundred eight billion, two hundred twenty-seven million, four hundred ninety-one thousand, fifty".

Divisors: 1 2 5 10 11 22 25 50 55 109 110 218 275 545 550 1090 1199 2398 2725 5450 5995 11990 29975 59950 345424979 690849958 1727124895 3454249790 3799674769 7599349538 8635624475 17271248950 18998373845 37651322711 37996747690 75302645422 94991869225 188256613555 189983738450 376513227110 414164549821 828329099642 941283067775 1882566135550 2070822749105 4141645498210 10354113745525 20708227491050