20507077212 has 12 divisors (see below), whose sum is σ = 47849846856. Its totient is φ = 6835692400.

The previous prime is 20507077141. The next prime is 20507077243. The reversal of 20507077212 is 21277070502.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854461539 + ... + 854461562.

It is an arithmetic number, because the mean of its divisors is an integer number (3987487238).

Almost surely, 2^20507077212 is an apocalyptic number.

It is an amenable number.

20507077212 is an abundant number, since it is smaller than the sum of its proper divisors (27342769644).

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

20507077212 is a wasteful number, since it uses less digits than its factorization.

20507077212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708923108 (or 1708923106 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 33.

It can be divided in two parts, 205070 and 77212, that added together give a palindrome (282282).

The spelling of 20507077212 in words is "twenty billion, five hundred seven million, seventy-seven thousand, two hundred twelve".