51109168418 has 16 divisors (see below), whose sum is σ = 95580782784. Its totient is φ = 19912662960.

The previous prime is 51109168399. The next prime is 51109168463. The reversal of 51109168418 is 81486190115.

It is a super-3 number, since 3×51109168418³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon 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, 165938705 + ... + 165939012.

It is an arithmetic number, because the mean of its divisors is an integer number (5973798924).

Almost surely, 2^51109168418 is an apocalyptic number.

51109168418 is a deficient number, since it is larger than the sum of its proper divisors (44471614366).

51109168418 is a wasteful number, since it uses less digits than its factorization.

51109168418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331877737.

The product of its (nonzero) digits is 69120, while the sum is 44.

The spelling of 51109168418 in words is "fifty-one billion, one hundred nine million, one hundred sixty-eight thousand, four hundred eighteen".