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51080036964 = 22311386969977
BaseRepresentation
bin101111100100100110…
…111000001001100100
311212211212002201210220
4233210212320021210
51314102442140324
635244342244340
73455545102365
oct574446701144
9155755081726
1051080036964
111a732392890
129a967266b0
134a80751058
142687d53b6c
1514de5d5b79
hexbe49b8264

51080036964 has 24 divisors (see below), whose sum is σ = 130021912608. Its totient is φ = 15478799040.

The previous prime is 51080036963. The next prime is 51080036989. The reversal of 51080036964 is 46963008015.

It is not an unprimeable number, because it can be changed into a prime (51080036963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193484857 + ... + 193485120.

It is an arithmetic number, because the mean of its divisors is an integer number (5417579692).

Almost surely, 251080036964 is an apocalyptic number.

It is an amenable number.

51080036964 is an abundant number, since it is smaller than the sum of its proper divisors (78941875644).

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

51080036964 is a wasteful number, since it uses less digits than its factorization.

51080036964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386969995 (or 386969993 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 51080036964 in words is "fifty-one billion, eighty million, thirty-six thousand, nine hundred sixty-four".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 386969977 773939954 1160909931 1547879908 2321819862 4256669747 4643639724 8513339494 12770009241 17026678988 25540018482 51080036964