20154179796 has 24 divisors (see below), whose sum is σ = 49792680000. Its totient is φ = 6322879872.

The previous prime is 20154179743. The next prime is 20154179797. The reversal of 20154179796 is 69797145102.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154179797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49397296 + ... + 49397703.

It is an arithmetic number, because the mean of its divisors is an integer number (2074695000).

Almost surely, 2^20154179796 is an apocalyptic number.

It is an amenable number.

20154179796 is an abundant number, since it is smaller than the sum of its proper divisors (29638500204).

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

20154179796 is a wasteful number, since it uses less digits than its factorization.

20154179796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98795023 (or 98795021 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 20154179796 in words is "twenty billion, one hundred fifty-four million, one hundred seventy-nine thousand, seven hundred ninety-six".