50687251791 has 8 divisors (see below), whose sum is σ = 73726911744. Its totient is φ = 30719546520.

The previous prime is 50687251789. The next prime is 50687251793. The reversal of 50687251791 is 19715278605.

It is an interprime number because it is at equal distance from previous prime (50687251789) and next prime (50687251793).

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

It is not a de Polignac number, because 50687251791 - 2¹ = 50687251789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50687251793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767988631 + ... + 767988696.

It is an arithmetic number, because the mean of its divisors is an integer number (9215863968).

Almost surely, 2^50687251791 is an apocalyptic number.

50687251791 is a deficient number, since it is larger than the sum of its proper divisors (23039659953).

50687251791 is a wasteful number, since it uses less digits than its factorization.

50687251791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535977341.

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 50687251791 in words is "fifty billion, six hundred eighty-seven million, two hundred fifty-one thousand, seven hundred ninety-one".