51995500559915 has 16 divisors (see below), whose sum is σ = 68068192354560. Its totient is φ = 37814156577120.

The previous prime is 51995500559909. The next prime is 51995500559923.

51995500559915 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51995500559915 - 2¹² = 51995500555819 is a prime.

It is a super-2 number, since 2×51995500559915² (a number of 28 digits) contains 22 as substring.

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, 6616589 + ... + 12156078.

It is an arithmetic number, because the mean of its divisors is an integer number (4254262022160).

Almost surely, 2^{51995500559915} is an apocalyptic number.

51995500559915 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51995500559915 is a deficient number, since it is larger than the sum of its proper divisors (16072691794645).

51995500559915 is a wasteful number, since it uses less digits than its factorization.

51995500559915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18823042.

The product of its (nonzero) digits is 102515625, while the sum is 68.

The spelling of 51995500559915 in words is "fifty-one trillion, nine hundred ninety-five billion, five hundred million, five hundred fifty-nine thousand, nine hundred fifteen".