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12497860679 = 19657782141
BaseRepresentation
bin10111010001110111…
…00011100001000111
31012020222221002210212
423220323203201013
5201043423020204
65424052310035
7621465030413
oct135073434107
935228832725
1012497860679
115333797787
12250961231b
13124234ac45
14867bb7d43
154d2314c6e
hex2e8ee3847

12497860679 has 4 divisors (see below), whose sum is σ = 13155642840. Its totient is φ = 11840078520.

The previous prime is 12497860651. The next prime is 12497860693. The reversal of 12497860679 is 97606879421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12497860679 - 212 = 12497856583 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 (12497860079) 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, 328891052 + ... + 328891089.

It is an arithmetic number, because the mean of its divisors is an integer number (3288910710).

Almost surely, 212497860679 is an apocalyptic number.

12497860679 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12497860679 is a deficient number, since it is larger than the sum of its proper divisors (657782161).

12497860679 is an equidigital number, since it uses as much as digits as its factorization.

12497860679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657782160.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 12497860679 in words is "twelve billion, four hundred ninety-seven million, eight hundred sixty thousand, six hundred seventy-nine".

Divisors: 1 19 657782141 12497860679