12521340552 has 64 divisors (see below), whose sum is σ = 35783654400. Its totient is φ = 3576686400.

The previous prime is 12521340551. The next prime is 12521340563. The reversal of 12521340552 is 25504312521.

12521340552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12521340551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1229899 + ... + 1240037.

It is an arithmetic number, because the mean of its divisors is an integer number (559119600).

Almost surely, 2^12521340552 is an apocalyptic number.

12521340552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12521340552 is an abundant number, since it is smaller than the sum of its proper divisors (23262313848).

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

12521340552 is a wasteful number, since it uses less digits than its factorization.

12521340552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17506 (or 17502 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 12521340552 in words is "twelve billion, five hundred twenty-one million, three hundred forty thousand, five hundred fifty-two".