51902805672 has 128 divisors (see below), whose sum is σ = 154806163200. Its totient is φ = 16053811200.

The previous prime is 51902805653. The next prime is 51902805679. The reversal of 51902805672 is 27650820915.

51902805672 is a `hidden beast` number, since 5 + 1 + 9 + 0 + 2 + 80 + 567 + 2 = 666.

51902805672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51902805679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161172 + ... + 360252.

It is an arithmetic number, because the mean of its divisors is an integer number (1209423150).

Almost surely, 2^51902805672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51902805672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77403081600).

51902805672 is an abundant number, since it is smaller than the sum of its proper divisors (102903357528).

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

51902805672 is a wasteful number, since it uses less digits than its factorization.

51902805672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199184 (or 199174 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 51902805672 in words is "fifty-one billion, nine hundred two million, eight hundred five thousand, six hundred seventy-two".