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12513263756 = 227736121949
BaseRepresentation
bin10111010011101100…
…10100000010001100
31012022001220122212012
423221312110002030
5201111343420011
65425402400352
7622042662350
oct135166240214
935261818765
1012513263756
1153414582a4
1225128000b8
1312455b1ba6
14869c67460
154d3858a8b
hex2e9d9408c

12513263756 has 24 divisors (see below), whose sum is σ = 25369360800. Its totient is φ = 5289363072.

The previous prime is 12513263723. The next prime is 12513263761. The reversal of 12513263756 is 65736231521.

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, 3058931 + ... + 3063018.

It is an arithmetic number, because the mean of its divisors is an integer number (1057056700).

Almost surely, 212513263756 is an apocalyptic number.

It is an amenable number.

12513263756 is an abundant number, since it is smaller than the sum of its proper divisors (12856097044).

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

12513263756 is a wasteful number, since it uses less digits than its factorization.

12513263756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6122033 (or 6122031 counting only the distinct ones).

The product of its digits is 226800, while the sum is 41.

The spelling of 12513263756 in words is "twelve billion, five hundred thirteen million, two hundred sixty-three thousand, seven hundred fifty-six".

Divisors: 1 2 4 7 14 28 73 146 292 511 1022 2044 6121949 12243898 24487796 42853643 85707286 171414572 446902277 893804554 1787609108 3128315939 6256631878 12513263756