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51130055015 = 5131746271543
BaseRepresentation
bin101111100111100101…
…101011100101100111
311212222100012220200022
4233213211223211213
51314203243230030
635253330305355
73460023203534
oct574745534547
9155870186608
1051130055015
111a758646116
129aab42825b
134a8ac14730
142690853d8b
1514e3bb5de5
hexbe796b967

51130055015 has 16 divisors (see below), whose sum is σ = 69962574528. Its totient is φ = 35536544256.

The previous prime is 51130054979. The next prime is 51130055047. The reversal of 51130055015 is 51055003115.

It is a cyclic number.

It is not a de Polignac number, because 51130055015 - 210 = 51130053991 is a prime.

It is a super-2 number, since 2×511300550152 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23134667 + ... + 23136876.

It is an arithmetic number, because the mean of its divisors is an integer number (4372660908).

Almost surely, 251130055015 is an apocalyptic number.

51130055015 is a deficient number, since it is larger than the sum of its proper divisors (18832519513).

51130055015 is a wasteful number, since it uses less digits than its factorization.

51130055015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46271578.

The product of its (nonzero) digits is 1875, while the sum is 26.

The spelling of 51130055015 in words is "fifty-one billion, one hundred thirty million, fifty-five thousand, fifteen".

Divisors: 1 5 13 17 65 85 221 1105 46271543 231357715 601530059 786616231 3007650295 3933081155 10226011003 51130055015