12615239620 has 24 divisors (see below), whose sum is σ = 27886320000. Its totient is φ = 4780511712.

The previous prime is 12615239597. The next prime is 12615239641. The reversal of 12615239620 is 2693251621.

It is a self number, because there is not a number n which added to its sum of digits gives 12615239620.

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, 16598620 + ... + 16599379.

It is an arithmetic number, because the mean of its divisors is an integer number (1161930000).

Almost surely, 2^12615239620 is an apocalyptic number.

12615239620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12615239620 is an abundant number, since it is smaller than the sum of its proper divisors (15271080380).

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

12615239620 is a wasteful number, since it uses less digits than its factorization.

12615239620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33198027 (or 33198025 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 12615239620 in words is "twelve billion, six hundred fifteen million, two hundred thirty-nine thousand, six hundred twenty".