51110317678 has 32 divisors (see below), whose sum is σ = 87800578560. Its totient is φ = 21858758880.

The previous prime is 51110317639. The next prime is 51110317681. The reversal of 51110317678 is 87671301115.

It is a happy number.

It is a super-2 number, since 2×51110317678² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51110317678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19816593 + ... + 19819171.

It is an arithmetic number, because the mean of its divisors is an integer number (2743768080).

Almost surely, 2^51110317678 is an apocalyptic number.

51110317678 is a deficient number, since it is larger than the sum of its proper divisors (36690260882).

51110317678 is a wasteful number, since it uses less digits than its factorization.

51110317678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 51110317678 in words is "fifty-one billion, one hundred ten million, three hundred seventeen thousand, six hundred seventy-eight".