12641515275 has 24 divisors (see below), whose sum is σ = 21465525424. Its totient is φ = 6559920000.

The previous prime is 12641515273. The next prime is 12641515303. The reversal of 12641515275 is 57251514621.

It is not a de Polignac number, because 12641515275 - 2¹ = 12641515273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12641515273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2274976 + ... + 2280525.

Almost surely, 2^12641515275 is an apocalyptic number.

12641515275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12641515275 is a deficient number, since it is larger than the sum of its proper divisors (8824010149).

12641515275 is a wasteful number, since it uses less digits than its factorization.

12641515275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555551 (or 4555546 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The spelling of 12641515275 in words is "twelve billion, six hundred forty-one million, five hundred fifteen thousand, two hundred seventy-five".