51860909500 has 48 divisors (see below), whose sum is σ = 113673426048. Its totient is φ = 20669419200.

The previous prime is 51860909459. The next prime is 51860909501. The reversal of 51860909500 is 590906815.

It is a happy number.

51860909500 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 (51860909501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48724 + ... + 325723.

It is an arithmetic number, because the mean of its divisors is an integer number (2368196376).

Almost surely, 2^51860909500 is an apocalyptic number.

51860909500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51860909500 is an abundant number, since it is smaller than the sum of its proper divisors (61812516548).

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

51860909500 is a wasteful number, since it uses less digits than its factorization.

51860909500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374743 (or 374731 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 51860909500 in words is "fifty-one billion, eight hundred sixty million, nine hundred nine thousand, five hundred".