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57218030351 = 671525955967
BaseRepresentation
bin110101010010011101…
…011101101100001111
312110200121211002211022
4311102131131230033
51414140303432401
642141404544355
74063626143006
oct652235355417
9173617732738
1057218030351
11222a20a5099
12b10a2520bb
13551b2a39c1
142aab203c3d
15174d3ca71b
hexd5275db0f

57218030351 has 8 divisors (see below), whose sum is σ = 58076874240. Its totient is φ = 56359329048.

The previous prime is 57218030323. The next prime is 57218030369. The reversal of 57218030351 is 15303081275.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-57218030351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57218030371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994370 + ... + 1050336.

It is an arithmetic number, because the mean of its divisors is an integer number (7259609280).

Almost surely, 257218030351 is an apocalyptic number.

57218030351 is a deficient number, since it is larger than the sum of its proper divisors (858843889).

57218030351 is a wasteful number, since it uses less digits than its factorization.

57218030351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71293.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 57218030351 in words is "fifty-seven billion, two hundred eighteen million, thirty thousand, three hundred fifty-one".

Divisors: 1 67 15259 55967 1022353 3749789 854000453 57218030351