20700051672 has 32 divisors (see below), whose sum is σ = 53148783600. Its totient is φ = 6713529984.

The previous prime is 20700051661. The next prime is 20700051677. The reversal of 20700051672 is 27615000702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20700051677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11654547 + ... + 11656322.

Almost surely, 2^20700051672 is an apocalyptic number.

It is an amenable number.

20700051672 is an abundant number, since it is smaller than the sum of its proper divisors (32448731928).

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

20700051672 is a wasteful number, since it uses less digits than its factorization.

20700051672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23310915 (or 23310911 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The spelling of 20700051672 in words is "twenty billion, seven hundred million, fifty-one thousand, six hundred seventy-two".