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12512660804 = 227446880743
BaseRepresentation
bin10111010011101000…
…00000110101000100
31012022000210000202122
423221310000311010
5201111220121204
65425341425112
7622034601440
oct135164006504
935260700678
1012512660804
115341086296
12251256b198
131245430607
14869b4b820
154d378a0be
hex2e9d00d44

12512660804 has 12 divisors (see below), whose sum is σ = 25025321664. Its totient is φ = 5362568904.

The previous prime is 12512660803. The next prime is 12512660819. The reversal of 12512660804 is 40806621521.

12512660804 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (12512660801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223440344 + ... + 223440399.

It is an arithmetic number, because the mean of its divisors is an integer number (2085443472).

Almost surely, 212512660804 is an apocalyptic number.

12512660804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12512660804 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12512660804 is a wasteful number, since it uses less digits than its factorization.

12512660804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446880754 (or 446880752 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 12512660804 in words is "twelve billion, five hundred twelve million, six hundred sixty thousand, eight hundred four".

Divisors: 1 2 4 7 14 28 446880743 893761486 1787522972 3128165201 6256330402 12512660804