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12790402653 = 371932056147
BaseRepresentation
bin10111110100101111…
…00000111001011101
31020000101101202221210
423322113200321131
5202143320341103
65513102415033
7631646425440
oct137227407135
936011352853
1012790402653
115473937906
12258b591479
13128ab371c2
148949a9657
154ecd4de03
hex2fa5e0e5d

12790402653 has 16 divisors (see below), whose sum is σ = 20515934720. Its totient is φ = 6924127536.

The previous prime is 12790402633. The next prime is 12790402657. The reversal of 12790402653 is 35620409721.

It is not a de Polignac number, because 12790402653 - 217 = 12790271581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12790402657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16027675 + ... + 16028472.

It is an arithmetic number, because the mean of its divisors is an integer number (1282245920).

Almost surely, 212790402653 is an apocalyptic number.

It is an amenable number.

12790402653 is a deficient number, since it is larger than the sum of its proper divisors (7725532067).

12790402653 is a wasteful number, since it uses less digits than its factorization.

12790402653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32056176.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 12790402653 in words is "twelve billion, seven hundred ninety million, four hundred two thousand, six hundred fifty-three".

Divisors: 1 3 7 19 21 57 133 399 32056147 96168441 224393029 609066793 673179087 1827200379 4263467551 12790402653