51038207999 has 8 divisors (see below), whose sum is σ = 52642596240. Its totient is φ = 49445660736.

The previous prime is 51038207989. The next prime is 51038208019. The reversal of 51038207999 is 99970283015.

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 51038207999 - 2²⁴ = 51021430783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51038207999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51038207989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2951489 + ... + 2968730.

It is an arithmetic number, because the mean of its divisors is an integer number (6580324530).

Almost surely, 2^51038207999 is an apocalyptic number.

51038207999 is a deficient number, since it is larger than the sum of its proper divisors (1604388241).

51038207999 is a wasteful number, since it uses less digits than its factorization.

51038207999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920489.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 51038207999 in words is "fifty-one billion, thirty-eight million, two hundred seven thousand, nine hundred ninety-nine".