13620273656 has 32 divisors (see below), whose sum is σ = 29498456880. Its totient is φ = 5826854400.

The previous prime is 13620273649. The next prime is 13620273691. The reversal of 13620273656 is 65637202631.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4550735 + ... + 4553726.

Almost surely, 2^13620273656 is an apocalyptic number.

It is an amenable number.

13620273656 is an abundant number, since it is smaller than the sum of its proper divisors (15878183224).

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

13620273656 is a wasteful number, since it uses less digits than its factorization.

13620273656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9104495 (or 9104491 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 13620273656 in words is "thirteen billion, six hundred twenty million, two hundred seventy-three thousand, six hundred fifty-six".