20751912432 has 60 divisors (see below), whose sum is σ = 58197971520. Its totient is φ = 6902840064.

The previous prime is 20751912431. The next prime is 20751912439. The reversal of 20751912432 is 23421915702.

20751912432 is a `hidden beast` number, since 207 + 5 + 1 + 9 + 12 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20751912431) 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 11 ways as a sum of consecutive naturals, for example, 81453 + ... + 219404.

It is an arithmetic number, because the mean of its divisors is an integer number (969966192).

Almost surely, 2^20751912432 is an apocalyptic number.

It is an amenable number.

20751912432 is an abundant number, since it is smaller than the sum of its proper divisors (37446059088).

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

20751912432 is a wasteful number, since it uses less digits than its factorization.

20751912432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301350 (or 301341 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 20751912432 in words is "twenty billion, seven hundred fifty-one million, nine hundred twelve thousand, four hundred thirty-two".