20650024660 has 24 divisors (see below), whose sum is σ = 43381185120. Its totient is φ = 8256936864.

The previous prime is 20650024649. The next prime is 20650024673. The reversal of 20650024660 is 6642005602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136570 + ... + 244849.

It is an arithmetic number, because the mean of its divisors is an integer number (1807549380).

Almost surely, 2^20650024660 is an apocalyptic number.

20650024660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20650024660 is an abundant number, since it is smaller than the sum of its proper divisors (22731160460).

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

20650024660 is a wasteful number, since it uses less digits than its factorization.

20650024660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384135 (or 384133 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 20650024660 in words is "twenty billion, six hundred fifty million, twenty-four thousand, six hundred sixty".