50431114181991 has 8 divisors (see below), whose sum is σ = 67250276492400. Its totient is φ = 33616347329792.

The previous prime is 50431114181953. The next prime is 50431114182023. The reversal of 50431114181991 is 19918141113405.

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 50431114181991 - 2⁹ = 50431114181479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50431114181991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50431114180991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098837780 + ... + 1098883673.

It is an arithmetic number, because the mean of its divisors is an integer number (8406284561550).

Almost surely, 2^{50431114181991} is an apocalyptic number.

50431114181991 is a deficient number, since it is larger than the sum of its proper divisors (16819162310409).

50431114181991 is a wasteful number, since it uses less digits than its factorization.

50431114181991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197729105.

The product of its (nonzero) digits is 155520, while the sum is 48.

The spelling of 50431114181991 in words is "fifty trillion, four hundred thirty-one billion, one hundred fourteen million, one hundred eighty-one thousand, nine hundred ninety-one".