13620552220 has 24 divisors (see below), whose sum is σ = 31203447408. Its totient is φ = 4952928000.

The previous prime is 13620552191. The next prime is 13620552233. The reversal of 13620552220 is 2225502631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30955581 + ... + 30956020.

It is an arithmetic number, because the mean of its divisors is an integer number (1300143642).

Almost surely, 2^13620552220 is an apocalyptic number.

13620552220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13620552220 is an abundant number, since it is smaller than the sum of its proper divisors (17582895188).

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

13620552220 is a wasteful number, since it uses less digits than its factorization.

13620552220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61911621 (or 61911619 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 13620552220 in words is "thirteen billion, six hundred twenty million, five hundred fifty-two thousand, two hundred twenty".