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157642574620 = 22561928574457
BaseRepresentation
bin1001001011010000111…
…0101100101100011100
3120001220101022112022211
42102310032230230130
510040322444341440
6200230415250204
714250346526626
oct2226416545434
9501811275284
10157642574620
116094613a623
1226676219964
1311b33a3966b
1478b67b7c16
154179a25eea
hex24b43acb1c

157642574620 has 48 divisors (see below), whose sum is σ = 331774702560. Its totient is φ = 62919005184.

The previous prime is 157642574603. The next prime is 157642574717. The reversal of 157642574620 is 26475246751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35367432 + ... + 35371888.

It is an arithmetic number, because the mean of its divisors is an integer number (6911972970).

Almost surely, 2157642574620 is an apocalyptic number.

157642574620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157642574620 is an abundant number, since it is smaller than the sum of its proper divisors (174132127940).

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

157642574620 is a wasteful number, since it uses less digits than its factorization.

157642574620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7942 (or 7940 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 157642574620 in words is "one hundred fifty-seven billion, six hundred forty-two million, five hundred seventy-four thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 619 1238 2476 2857 3095 4457 5714 6190 8914 11428 12380 14285 17828 22285 28570 44570 57140 89140 1768483 2758883 3536966 5517766 7073932 8842415 11035532 12733649 13794415 17684830 25467298 27588830 35369660 50934596 55177660 63668245 127336490 254672980 7882128731 15764257462 31528514924 39410643655 78821287310 157642574620