51502515040 has 48 divisors (see below), whose sum is σ = 121696177680. Its totient is φ = 20597368320.

The previous prime is 51502515017. The next prime is 51502515041. The reversal of 51502515040 is 4051520515.

51502515040 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 not an unprimeable number, because it can be changed into a prime (51502515041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995410 + ... + 1045870.

It is an arithmetic number, because the mean of its divisors is an integer number (2535337035).

Almost surely, 2^51502515040 is an apocalyptic number.

It is an amenable number.

51502515040 is an abundant number, since it is smaller than the sum of its proper divisors (70193662640).

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

51502515040 is a wasteful number, since it uses less digits than its factorization.

51502515040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56855 (or 56847 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 51502515040 in words is "fifty-one billion, five hundred two million, five hundred fifteen thousand, forty".