51004063500 has 96 divisors (see below), whose sum is σ = 159948804288. Its totient is φ = 12554841600.

The previous prime is 51004063477. The next prime is 51004063541. The reversal of 51004063500 is 536040015.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1288297 + ... + 1327296.

It is an arithmetic number, because the mean of its divisors is an integer number (1666133378).

Almost surely, 2^51004063500 is an apocalyptic number.

51004063500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51004063500 is an abundant number, since it is smaller than the sum of its proper divisors (108944740788).

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

51004063500 is a wasteful number, since it uses less digits than its factorization.

51004063500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615628 (or 2615616 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The spelling of 51004063500 in words is "fifty-one billion, four million, sixty-three thousand, five hundred".