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57378380844 = 22330431157127
BaseRepresentation
bin110101011100000001…
…001001110000101100
312111002210112202100110
4311130001021300230
51420002331141334
642205333500020
74100614122111
oct653401116054
9174083482313
1057378380844
1122374666864
12b153aa1610
135545587b55
142ac4624908
15175c501ae9
hexd5c049c2c

57378380844 has 24 divisors (see below), whose sum is σ = 133888140288. Its totient is φ = 19125376720.

The previous prime is 57378380833. The next prime is 57378380863. The reversal of 57378380844 is 44808387375.

It is a happy 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, 286609 + ... + 443735.

It is an arithmetic number, because the mean of its divisors is an integer number (5578672512).

Almost surely, 257378380844 is an apocalyptic number.

It is an amenable number.

57378380844 is an abundant number, since it is smaller than the sum of its proper divisors (76509759444).

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

57378380844 is a wasteful number, since it uses less digits than its factorization.

57378380844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187565 (or 187563 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 57.

The spelling of 57378380844 in words is "fifty-seven billion, three hundred seventy-eight million, three hundred eighty thousand, eight hundred forty-four".

Divisors: 1 2 3 4 6 12 30431 60862 91293 121724 157127 182586 314254 365172 471381 628508 942762 1885524 4781531737 9563063474 14344595211 19126126948 28689190422 57378380844