12615213740 has 24 divisors (see below), whose sum is σ = 27138095712. Its totient is φ = 4923009920.

The previous prime is 12615213739. The next prime is 12615213827. The reversal of 12615213740 is 4731251621.

It is a junction number, because it is equal to n+sod(n) for n = 12615213697 and 12615213706.

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, 7691384 + ... + 7693023.

It is an arithmetic number, because the mean of its divisors is an integer number (1130753988).

Almost surely, 2^12615213740 is an apocalyptic number.

12615213740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12615213740 is an abundant number, since it is smaller than the sum of its proper divisors (14522881972).

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

12615213740 is a wasteful number, since it uses less digits than its factorization.

12615213740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15384457 (or 15384455 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 12615213740 in words is "twelve billion, six hundred fifteen million, two hundred thirteen thousand, seven hundred forty".