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57516112121979 = 372391266068857
BaseRepresentation
bin11010001001111100000110…
…11011101001000001111011
321112122111010202010120000010
431010332003123221001323
530014320444200400404
6322154312004513003
715054254606351400
oct1504760333510173
9245574122116003
1057516112121979
111736549a93a615
12654b0116ab763
13261299124b754
14102bb1a8602a7
1569b1d5734189
hex344f836e907b

57516112121979 has 12 divisors (see below), whose sum is σ = 89208663699624. Its totient is φ = 32866349783904.

The previous prime is 57516112121873. The next prime is 57516112121981. The reversal of 57516112121979 is 97912121161575.

It is not a de Polignac number, because 57516112121979 - 28 = 57516112121723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57516112121179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195633034282 + ... + 195633034575.

It is an arithmetic number, because the mean of its divisors is an integer number (7434055308302).

Almost surely, 257516112121979 is an apocalyptic number.

57516112121979 is a deficient number, since it is larger than the sum of its proper divisors (31692551577645).

57516112121979 is a wasteful number, since it uses less digits than its factorization.

57516112121979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391266068874 (or 391266068867 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 57.

The spelling of 57516112121979 in words is "fifty-seven trillion, five hundred sixteen billion, one hundred twelve million, one hundred twenty-one thousand, nine hundred seventy-nine".

Divisors: 1 3 7 21 49 147 391266068857 1173798206571 2738862481999 8216587445997 19172037373993 57516112121979