12515515304 has 8 divisors (see below), whose sum is σ = 23466591210. Its totient is φ = 6257757648.

The previous prime is 12515515291. The next prime is 12515515321. The reversal of 12515515304 is 40351551521.

It can be written as a sum of positive squares in only one way, i.e., 10463244100 + 2052271204 = 102290^2 + 45302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782219699 + ... + 782219714.

Almost surely, 2^12515515304 is an apocalyptic number.

It is an amenable number.

12515515304 is a deficient number, since it is larger than the sum of its proper divisors (10951075906).

12515515304 is a wasteful number, since it uses less digits than its factorization.

12515515304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564439419 (or 1564439415 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 12515515304 in words is "twelve billion, five hundred fifteen million, five hundred fifteen thousand, three hundred four".