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57121452195 = 354388560391
BaseRepresentation
bin110101001100101101…
…000011000010100011
312110102220002102111120
4311030231003002203
51413441042432240
642124034543323
74061344222023
oct651455030243
9173386072446
1057121452195
1122252630535
12b0a1a37b43
13550428a872
142a9c463a83
151744b9ead0
hexd4cb430a3

57121452195 has 16 divisors (see below), whose sum is σ = 93519773952. Its totient is φ = 29756291040.

The previous prime is 57121452187. The next prime is 57121452211. The reversal of 57121452195 is 59125412175.

It is not a de Polignac number, because 57121452195 - 23 = 57121452187 is a prime.

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, 44279551 + ... + 44280840.

It is an arithmetic number, because the mean of its divisors is an integer number (5844985872).

Almost surely, 257121452195 is an apocalyptic number.

57121452195 is a deficient number, since it is larger than the sum of its proper divisors (36398321757).

57121452195 is a wasteful number, since it uses less digits than its factorization.

57121452195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88560442.

The product of its digits is 126000, while the sum is 42.

The spelling of 57121452195 in words is "fifty-seven billion, one hundred twenty-one million, four hundred fifty-two thousand, one hundred ninety-five".

Divisors: 1 3 5 15 43 129 215 645 88560391 265681173 442801955 1328405865 3808096813 11424290439 19040484065 57121452195