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12810472767 = 323145915673
BaseRepresentation
bin10111110111001000…
…00100110100111111
31020001210011102222100
423323210010310333
5202213440112032
65515100520143
7632312136051
oct137344046477
936053142870
1012810472767
1154841a5884
122596250053
131292043501
148975118d1
154ee9b597c
hex2fb904d3f

12810472767 has 12 divisors (see below), whose sum is σ = 19100920384. Its totient is φ = 8264820960.

The previous prime is 12810472747. The next prime is 12810472799. The reversal of 12810472767 is 76727401821.

It is a de Polignac number, because none of the positive numbers 2k-12810472767 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 (12810472747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22957558 + ... + 22958115.

Almost surely, 212810472767 is an apocalyptic number.

12810472767 is a deficient number, since it is larger than the sum of its proper divisors (6290447617).

12810472767 is a wasteful number, since it uses less digits than its factorization.

12810472767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45915710 (or 45915707 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 12810472767 in words is "twelve billion, eight hundred ten million, four hundred seventy-two thousand, seven hundred sixty-seven".

Divisors: 1 3 9 31 93 279 45915673 137747019 413241057 1423385863 4270157589 12810472767