13522639520 has 192 divisors, whose sum is σ = 35366647680. Its totient is φ = 4855296000.

The previous prime is 13522639519. The next prime is 13522639531. The reversal of 13522639520 is 2593622531.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12394175 + ... + 12395265.

It is an arithmetic number, because the mean of its divisors is an integer number (184201290).

Almost surely, 2^13522639520 is an apocalyptic number.

13522639520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13522639520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17683323840).

13522639520 is an abundant number, since it is smaller than the sum of its proper divisors (21844008160).

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

13522639520 is a wasteful number, since it uses less digits than its factorization.

13522639520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 13522639520 in words is "thirteen billion, five hundred twenty-two million, six hundred thirty-nine thousand, five hundred twenty".