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51380009744 = 2473712398651
BaseRepresentation
bin101111110110011111…
…001011101100010000
311220121202112221002212
4233312133023230100
51320211240302434
635334215531252
73466146606530
oct576637135420
9156552487085
1051380009744
111a876748878
129b5b089b28
134aca93c63b
1426b5b1b4c0
15150aadb8ce
hexbf67cbb10

51380009744 has 40 divisors (see below), whose sum is σ = 116844896448. Its totient is φ = 21424867200.

The previous prime is 51380009719. The next prime is 51380009753. The reversal of 51380009744 is 44790008315.

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, 6195182 + ... + 6203469.

Almost surely, 251380009744 is an apocalyptic number.

It is an amenable number.

51380009744 is an abundant number, since it is smaller than the sum of its proper divisors (65464886704).

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

51380009744 is a wasteful number, since it uses less digits than its factorization.

51380009744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12398703 (or 12398697 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 51380009744 in words is "fifty-one billion, three hundred eighty million, nine thousand, seven hundred forty-four".

Divisors: 1 2 4 7 8 14 16 28 37 56 74 112 148 259 296 518 592 1036 2072 4144 12398651 24797302 49594604 86790557 99189208 173581114 198378416 347162228 458750087 694324456 917500174 1388648912 1835000348 3211250609 3670000696 6422501218 7340001392 12845002436 25690004872 51380009744