51005050500 has 96 divisors (see below), whose sum is σ = 149997714048. Its totient is φ = 13466640000.

The previous prime is 51005050483. The next prime is 51005050501. The reversal of 51005050500 is 505050015.

It is not an unprimeable number, because it can be changed into a prime (51005050501) 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, 16834 + ... + 319833.

It is an arithmetic number, because the mean of its divisors is an integer number (1562476188).

Almost surely, 2^51005050500 is an apocalyptic number.

51005050500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51005050500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74998857024).

51005050500 is an abundant number, since it is smaller than the sum of its proper divisors (98992663548).

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

51005050500 is a wasteful number, since it uses less digits than its factorization.

51005050500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336790 (or 336778 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 21.

The spelling of 51005050500 in words is "fifty-one billion, five million, fifty thousand, five hundred".