20324976660 has 36 divisors (see below), whose sum is σ = 61652429748. Its totient is φ = 5419993728.

The previous prime is 20324976643. The next prime is 20324976733. The reversal of 20324976660 is 6667942302.

It can be written as a sum of positive squares in 2 ways, for example, as 3921514884 + 16403461776 = 62622^2 + 128076^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56458089 + ... + 56458448.

It is an arithmetic number, because the mean of its divisors is an integer number (1712567493).

Almost surely, 2^20324976660 is an apocalyptic number.

20324976660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20324976660 is an abundant number, since it is smaller than the sum of its proper divisors (41327453088).

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

20324976660 is a wasteful number, since it uses less digits than its factorization.

20324976660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112916552 (or 112916547 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 20324976660 in words is "twenty billion, three hundred twenty-four million, nine hundred seventy-six thousand, six hundred sixty".