20677207120 has 20 divisors (see below), whose sum is σ = 48074506740. Its totient is φ = 8270882816.

The previous prime is 20677207087. The next prime is 20677207157. The reversal of 20677207120 is 2170277602.

It can be written as a sum of positive squares in 2 ways, for example, as 7958780944 + 12718426176 = 89212^2 + 112776^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 129232465 + ... + 129232624.

It is an arithmetic number, because the mean of its divisors is an integer number (2403725337).

Almost surely, 2^20677207120 is an apocalyptic number.

20677207120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20677207120 is an abundant number, since it is smaller than the sum of its proper divisors (27397299620).

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

20677207120 is a wasteful number, since it uses less digits than its factorization.

20677207120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258465102 (or 258465096 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The spelling of 20677207120 in words is "twenty billion, six hundred seventy-seven million, two hundred seven thousand, one hundred twenty".