50991750519 has 16 divisors (see below), whose sum is σ = 68460233184. Its totient is φ = 33759334400.

The previous prime is 50991750493. The next prime is 50991750527. The reversal of 50991750519 is 91505719905.

It is a cyclic number.

It is not a de Polignac number, because 50991750519 - 2¹² = 50991746423 is a prime.

It is a super-2 number, since 2×50991750519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50991750539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401479 + ... + 512999.

It is an arithmetic number, because the mean of its divisors is an integer number (4278764574).

Almost surely, 2^50991750519 is an apocalyptic number.

50991750519 is a deficient number, since it is larger than the sum of its proper divisors (17468482665).

50991750519 is a wasteful number, since it uses less digits than its factorization.

50991750519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112578.

The product of its (nonzero) digits is 637875, while the sum is 51.

The spelling of 50991750519 in words is "fifty billion, nine hundred ninety-one million, seven hundred fifty thousand, five hundred nineteen".