12538507264 has 26 divisors (see below), whose sum is σ = 25073961560. Its totient is φ = 6269251584.

The previous prime is 12538507243. The next prime is 12538507271. The reversal of 12538507264 is 46270583521.

It is a self number, because there is not a number n which added to its sum of digits gives 12538507264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1526484 + ... + 1534675.

Almost surely, 2^12538507264 is an apocalyptic number.

It is an amenable number.

12538507264 is a deficient number, since it is larger than the sum of its proper divisors (12535454296).

12538507264 is an frugal number, since it uses more digits than its factorization.

12538507264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061183 (or 3061161 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 12538507264 in words is "twelve billion, five hundred thirty-eight million, five hundred seven thousand, two hundred sixty-four".