51116507154 has 24 divisors (see below), whose sum is σ = 117267281820. Its totient is φ = 16036551168.

The previous prime is 51116507119. The next prime is 51116507203. The reversal of 51116507154 is 45170561115.

It can be written as a sum of positive squares in 2 ways, for example, as 45252776529 + 5863730625 = 212727^2 + 76575^2 .

It is a super-2 number, since 2×51116507154² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83523399 + ... + 83524010.

Almost surely, 2^51116507154 is an apocalyptic number.

51116507154 is an abundant number, since it is smaller than the sum of its proper divisors (66150774666).

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

51116507154 is a wasteful number, since it uses less digits than its factorization.

51116507154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167047434 (or 167047431 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 36.

The spelling of 51116507154 in words is "fifty-one billion, one hundred sixteen million, five hundred seven thousand, one hundred fifty-four".