13620221850 has 24 divisors (see below), whose sum is σ = 33778150560. Its totient is φ = 3632059120.

The previous prime is 13620221843. The next prime is 13620221863. The reversal of 13620221850 is 5812202631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45400590 + ... + 45400889.

It is an arithmetic number, because the mean of its divisors is an integer number (1407422940).

Almost surely, 2^13620221850 is an apocalyptic number.

13620221850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13620221850 is an abundant number, since it is smaller than the sum of its proper divisors (20157928710).

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

13620221850 is a wasteful number, since it uses less digits than its factorization.

13620221850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90801494 (or 90801489 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 13620221850 in words is "thirteen billion, six hundred twenty million, two hundred twenty-one thousand, eight hundred fifty".