12765915140 has 24 divisors (see below), whose sum is σ = 29245551552. Its totient is φ = 4642150880.

The previous prime is 12765915133. The next prime is 12765915157. The reversal of 12765915140 is 4151956721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29013224 + ... + 29013663.

It is an arithmetic number, because the mean of its divisors is an integer number (1218564648).

Almost surely, 2^12765915140 is an apocalyptic number.

12765915140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12765915140 is an abundant number, since it is smaller than the sum of its proper divisors (16479636412).

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

12765915140 is a wasteful number, since it uses less digits than its factorization.

12765915140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58026907 (or 58026905 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 12765915140 in words is "twelve billion, seven hundred sixty-five million, nine hundred fifteen thousand, one hundred forty".