20772046158 has 32 divisors (see below), whose sum is σ = 41845237632. Its totient is φ = 6873919200.

The previous prime is 20772046157. The next prime is 20772046171. The reversal of 20772046158 is 85164027702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20772046157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909013 + ... + 931583.

It is an arithmetic number, because the mean of its divisors is an integer number (1307663676).

Almost surely, 2^20772046158 is an apocalyptic number.

20772046158 is an abundant number, since it is smaller than the sum of its proper divisors (21073191474).

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

20772046158 is a wasteful number, since it uses less digits than its factorization.

20772046158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23680.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 20772046158 in words is "twenty billion, seven hundred seventy-two million, forty-six thousand, one hundred fifty-eight".