12610438440 has 64 divisors (see below), whose sum is σ = 38221364160. Its totient is φ = 3328112640.

The previous prime is 12610438411. The next prime is 12610438469. The reversal of 12610438440 is 4483401621.

It is an interprime number because it is at equal distance from previous prime (12610438411) and next prime (12610438469).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530046 + ... + 553325.

It is an arithmetic number, because the mean of its divisors is an integer number (597208815).

Almost surely, 2^12610438440 is an apocalyptic number.

12610438440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12610438440 is an abundant number, since it is smaller than the sum of its proper divisors (25610925720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12610438440 is a wasteful number, since it uses less digits than its factorization.

12610438440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083482 (or 1083478 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 12610438440 in words is "twelve billion, six hundred ten million, four hundred thirty-eight thousand, four hundred forty".