51500051010 has 48 divisors (see below), whose sum is σ = 134116594560. Its totient is φ = 13711145760.

The previous prime is 51500051003. The next prime is 51500051021. The reversal of 51500051010 is 1015000515.

51500051010 is a `hidden beast` number, since 5 + 150 + 0 + 0 + 510 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 406506 + ... + 517925.

It is an arithmetic number, because the mean of its divisors is an integer number (2794095720).

Almost surely, 2^51500051010 is an apocalyptic number.

51500051010 is an abundant number, since it is smaller than the sum of its proper divisors (82616543550).

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

51500051010 is a wasteful number, since it uses less digits than its factorization.

51500051010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925063 (or 925060 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

Adding to 51500051010 its reverse (1015000515), we get a palindrome (52515051525).

The spelling of 51500051010 in words is "fifty-one billion, five hundred million, fifty-one thousand, ten".