51131836110 has 32 divisors (see below), whose sum is σ = 124796350080. Its totient is φ = 13404051488.

The previous prime is 51131836109. The next prime is 51131836117. The reversal of 51131836110 is 1163813115.

It is a super-2 number, since 2×51131836110² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51131836117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14442252 + ... + 14445791.

It is an arithmetic number, because the mean of its divisors is an integer number (3899885940).

Almost surely, 2^51131836110 is an apocalyptic number.

51131836110 is an abundant number, since it is smaller than the sum of its proper divisors (73664513970).

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

51131836110 is a wasteful number, since it uses less digits than its factorization.

51131836110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28888112.

The product of its (nonzero) digits is 2160, while the sum is 30.

The spelling of 51131836110 in words is "fifty-one billion, one hundred thirty-one million, eight hundred thirty-six thousand, one hundred ten".