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257848872054 = 23192261832211
BaseRepresentation
bin1111000000100011111…
…1011000110001110110
3220122112221010212110020
43300020333120301312
513211033302401204
6314242032110010
724425510151444
oct3601077306166
9818487125406
10257848872054
119a397a69a74
1241b81095306
131b4131c9897
14c6a0db9b94
156a91e10bd9
hex3c08fd8c76

257848872054 has 16 divisors (see below), whose sum is σ = 542839730880. Its totient is φ = 81425959560.

The previous prime is 257848871981. The next prime is 257848872089. The reversal of 257848872054 is 450278848752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130915992 + ... + 1130916219.

It is an arithmetic number, because the mean of its divisors is an integer number (33927483180).

Almost surely, 2257848872054 is an apocalyptic number.

257848872054 is an abundant number, since it is smaller than the sum of its proper divisors (284990858826).

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

257848872054 is a wasteful number, since it uses less digits than its factorization.

257848872054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261832235.

The product of its (nonzero) digits is 40140800, while the sum is 60.

The spelling of 257848872054 in words is "two hundred fifty-seven billion, eight hundred forty-eight million, eight hundred seventy-two thousand, fifty-four".

Divisors: 1 2 3 6 19 38 57 114 2261832211 4523664422 6785496633 13570993266 42974812009 85949624018 128924436027 257848872054