20653413660 has 72 divisors (see below), whose sum is σ = 68344029936. Its totient is φ = 5006887680.

The previous prime is 20653413659. The next prime is 20653413673. The reversal of 20653413660 is 6631435602.

20653413660 is a `hidden beast` number, since 206 + 53 + 41 + 366 + 0 = 666.

It is a super-2 number, since 2×20653413660² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5213529 + ... + 5217488.

It is an arithmetic number, because the mean of its divisors is an integer number (949222638).

Almost surely, 2^20653413660 is an apocalyptic number.

20653413660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20653413660 is an abundant number, since it is smaller than the sum of its proper divisors (47690616276).

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

20653413660 is a wasteful number, since it uses less digits than its factorization.

20653413660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10431043 (or 10431038 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 20653413660 in words is "twenty billion, six hundred fifty-three million, four hundred thirteen thousand, six hundred sixty".