13321520052 has 24 divisors (see below), whose sum is σ = 32435006016. Its totient is φ = 4247441088.

The previous prime is 13321520039. The next prime is 13321520057. The reversal of 13321520052 is 25002512331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321520057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24132913 + ... + 24133464.

It is an arithmetic number, because the mean of its divisors is an integer number (1351458584).

Almost surely, 2^13321520052 is an apocalyptic number.

13321520052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13321520052 is an abundant number, since it is smaller than the sum of its proper divisors (19113485964).

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

13321520052 is a wasteful number, since it uses less digits than its factorization.

13321520052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48266407 (or 48266405 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The spelling of 13321520052 in words is "thirteen billion, three hundred twenty-one million, five hundred twenty thousand, fifty-two".