13620216940 has 48 divisors (see below), whose sum is σ = 31668424704. Its totient is φ = 4878878400.

The previous prime is 13620216931. The next prime is 13620216941. The reversal of 13620216940 is 4961202631.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13620216896 and 13620216905.

It is not an unprimeable number, because it can be changed into a prime (13620216941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447276 + ... + 476755.

It is an arithmetic number, because the mean of its divisors is an integer number (659758848).

Almost surely, 2^13620216940 is an apocalyptic number.

13620216940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13620216940 is an abundant number, since it is smaller than the sum of its proper divisors (18048207764).

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

13620216940 is a wasteful number, since it uses less digits than its factorization.

13620216940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924118 (or 924116 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 13620216940 in words is "thirteen billion, six hundred twenty million, two hundred sixteen thousand, nine hundred forty".