20474356164 has 48 divisors (see below), whose sum is σ = 50654419200. Its totient is φ = 6414347776.

The previous prime is 20474356159. The next prime is 20474356183. The reversal of 20474356164 is 46165347402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76882 + ... + 216470.

It is an arithmetic number, because the mean of its divisors is an integer number (1055300400).

Almost surely, 2^20474356164 is an apocalyptic number.

It is an amenable number.

20474356164 is an abundant number, since it is smaller than the sum of its proper divisors (30180063036).

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

20474356164 is a wasteful number, since it uses less digits than its factorization.

20474356164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140332 (or 140330 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 20474356164 in words is "twenty billion, four hundred seventy-four million, three hundred fifty-six thousand, one hundred sixty-four".