20164730620 has 24 divisors (see below), whose sum is σ = 42459477984. Its totient is φ = 8044264896.

The previous prime is 20164730581. The next prime is 20164730629. The reversal of 20164730620 is 2603746102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164730629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344064 + ... + 1358983.

It is an arithmetic number, because the mean of its divisors is an integer number (1769144916).

Almost surely, 2^20164730620 is an apocalyptic number.

20164730620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20164730620 is an abundant number, since it is smaller than the sum of its proper divisors (22294747364).

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

20164730620 is a wasteful number, since it uses less digits than its factorization.

20164730620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703429 (or 2703427 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 20164730620 in words is "twenty billion, one hundred sixty-four million, seven hundred thirty thousand, six hundred twenty".