13620732660 has 96 divisors (see below), whose sum is σ = 42851894400. Its totient is φ = 3591371520.

The previous prime is 13620732649. The next prime is 13620732661. The reversal of 13620732660 is 6623702631.

13620732660 is a `hidden beast` number, since 1 + 3 + 620 + 7 + 3 + 26 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13620732661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93646 + ... + 189765.

It is an arithmetic number, because the mean of its divisors is an integer number (446373900).

Almost surely, 2^13620732660 is an apocalyptic number.

13620732660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13620732660 is an abundant number, since it is smaller than the sum of its proper divisors (29231161740).

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

13620732660 is a wasteful number, since it uses less digits than its factorization.

13620732660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283518 (or 283510 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 13620732660 in words is "thirteen billion, six hundred twenty million, seven hundred thirty-two thousand, six hundred sixty".