51111055118 has 48 divisors (see below), whose sum is σ = 82466929440. Its totient is φ = 23750639616.

The previous prime is 51111055111. The next prime is 51111055217. The reversal of 51111055118 is 81155011115.

It is a super-2 number, since 2×51111055118² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51111055111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36273998 + ... + 36275406.

It is an arithmetic number, because the mean of its divisors is an integer number (1718061030).

Almost surely, 2^51111055118 is an apocalyptic number.

51111055118 is a deficient number, since it is larger than the sum of its proper divisors (31355874322).

51111055118 is a wasteful number, since it uses less digits than its factorization.

51111055118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189 (or 2172 counting only the distinct ones).

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

The spelling of 51111055118 in words is "fifty-one billion, one hundred eleven million, fifty-five thousand, one hundred eighteen".