51010520000 has 140 divisors (see below), whose sum is σ = 137989747896. Its totient is φ = 18549120000.

The previous prime is 51010519999. The next prime is 51010520023. The reversal of 51010520000 is 2501015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 382034 + ... + 497966.

Almost surely, 2^51010520000 is an apocalyptic number.

51010520000 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 51010520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68994873948).

51010520000 is an abundant number, since it is smaller than the sum of its proper divisors (86979227896).

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

51010520000 is a wasteful number, since it uses less digits than its factorization.

51010520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115976 (or 115951 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 14.

The spelling of 51010520000 in words is "fifty-one billion, ten million, five hundred twenty thousand".