12810617744 has 20 divisors (see below), whose sum is σ = 25491399324. Its totient is φ = 6232192128.

The previous prime is 12810617737. The next prime is 12810617753. The reversal of 12810617744 is 44771601821.

It can be written as a sum of positive squares in 2 ways, for example, as 10555507600 + 2255110144 = 102740^2 + 47488^2 .

It is a super-2 number, since 2×12810617744² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10819187 + ... + 10820370.

Almost surely, 2^12810617744 is an apocalyptic number.

It is an amenable number.

12810617744 is a deficient number, since it is larger than the sum of its proper divisors (12680781580).

12810617744 is a wasteful number, since it uses less digits than its factorization.

12810617744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21639602 (or 21639596 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 12810617744 in words is "twelve billion, eight hundred ten million, six hundred seventeen thousand, seven hundred forty-four".