51293807999 has 8 divisors (see below), whose sum is σ = 59868761088. Its totient is φ = 43030671480.

The previous prime is 51293807993. The next prime is 51293808001. The reversal of 51293807999 is 99970839215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51293807999 - 2²⁸ = 51025372543 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 (51293807993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77953787 + ... + 77954444.

It is an arithmetic number, because the mean of its divisors is an integer number (7483595136).

Almost surely, 2^51293807999 is an apocalyptic number.

51293807999 is a deficient number, since it is larger than the sum of its proper divisors (8574953089).

51293807999 is a wasteful number, since it uses less digits than its factorization.

51293807999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155908285.

The product of its (nonzero) digits is 11022480, while the sum is 62.

The spelling of 51293807999 in words is "fifty-one billion, two hundred ninety-three million, eight hundred seven thousand, nine hundred ninety-nine".