51939934902 has 48 divisors (see below), whose sum is σ = 117002340000. Its totient is φ = 16632266112.

The previous prime is 51939934889. The next prime is 51939934957. The reversal of 51939934902 is 20943993915.

51939934902 is a `hidden beast` number, since 519 + 3 + 9 + 9 + 34 + 90 + 2 = 666.

51939934902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146127 + ... + 353882.

It is an arithmetic number, because the mean of its divisors is an integer number (2437548750).

Almost surely, 2^51939934902 is an apocalyptic number.

51939934902 is an abundant number, since it is smaller than the sum of its proper divisors (65062405098).

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

51939934902 is a wasteful number, since it uses less digits than its factorization.

51939934902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500245 (or 500242 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 54.

The spelling of 51939934902 in words is "fifty-one billion, nine hundred thirty-nine million, nine hundred thirty-four thousand, nine hundred two".