51387884995 has 8 divisors (see below), whose sum is σ = 61833489984. Its totient is φ = 40998289344.

The previous prime is 51387884953. The next prime is 51387885007. The reversal of 51387884995 is 59948878315.

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 51387884995 - 2¹¹ = 51387882947 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 51387884995.

It is an unprimeable number.

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, 14000314 + ... + 14003983.

It is an arithmetic number, because the mean of its divisors is an integer number (7729186248).

Almost surely, 2^51387884995 is an apocalyptic number.

51387884995 is a deficient number, since it is larger than the sum of its proper divisors (10445604989).

51387884995 is a wasteful number, since it uses less digits than its factorization.

51387884995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28004669.

The product of its digits is 87091200, while the sum is 67.

The spelling of 51387884995 in words is "fifty-one billion, three hundred eighty-seven million, eight hundred eighty-four thousand, nine hundred ninety-five".