51505114999 has 48 divisors (see below), whose sum is σ = 60316412800. Its totient is φ = 43700207616.

The previous prime is 51505114961. The next prime is 51505115003. The reversal of 51505114999 is 99941150515.

It is not a de Polignac number, because 51505114999 - 2¹⁷ = 51504983927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51505114919) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28788997 + ... + 28790785.

Almost surely, 2^51505114999 is an apocalyptic number.

51505114999 is a deficient number, since it is larger than the sum of its proper divisors (8811297801).

51505114999 is a wasteful number, since it uses less digits than its factorization.

51505114999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 49.

The spelling of 51505114999 in words is "fifty-one billion, five hundred five million, one hundred fourteen thousand, nine hundred ninety-nine".