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57997257982 = 251015684891
BaseRepresentation
bin110110000000111001…
…111110110011111110
312112200221001222011221
4312000321332303332
51422234244223412
642351002303554
74122140362456
oct660071766376
9175627058157
1057997257982
1122661a38374
12b2a71b7bba
135613862a41
142b428c2d66
1517969ecb07
hexd80e7ecfe

57997257982 has 8 divisors (see below), whose sum is σ = 87012956952. Its totient is φ = 28992939000.

The previous prime is 57997257979. The next prime is 57997257991. The reversal of 57997257982 is 28975279975.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2832244 + ... + 2852647.

It is an arithmetic number, because the mean of its divisors is an integer number (10876619619).

Almost surely, 257997257982 is an apocalyptic number.

57997257982 is a deficient number, since it is larger than the sum of its proper divisors (29015698970).

57997257982 is a wasteful number, since it uses less digits than its factorization.

57997257982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5689994.

The product of its digits is 200037600, while the sum is 70.

The spelling of 57997257982 in words is "fifty-seven billion, nine hundred ninety-seven million, two hundred fifty-seven thousand, nine hundred eighty-two".

Divisors: 1 2 5101 10202 5684891 11369782 28998628991 57997257982