51115051118 has 16 divisors (see below), whose sum is σ = 77192416800. Its totient is φ = 25384378656.

The previous prime is 51115051109. The next prime is 51115051129. The reversal of 51115051118 is 81115051115.

It is a super-2 number, since 2×51115051118² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 768455 + ... + 832317.

It is an arithmetic number, because the mean of its divisors is an integer number (4824526050).

Almost surely, 2^51115051118 is an apocalyptic number.

51115051118 is a deficient number, since it is larger than the sum of its proper divisors (26077365682).

51115051118 is a wasteful number, since it uses less digits than its factorization.

51115051118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66571.

The product of its (nonzero) digits is 1000, while the sum is 29.

The spelling of 51115051118 in words is "fifty-one billion, one hundred fifteen million, fifty-one thousand, one hundred eighteen".