50171992799 has 2 divisors, whose sum is σ = 50171992800. Its totient is φ = 50171992798.

The previous prime is 50171992733. The next prime is 50171992807. The reversal of 50171992799 is 99729917105.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50171992799 is a prime.

It is a super-2 number, since 2×50171992799² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50171994799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25085996399 + 25085996400.

It is an arithmetic number, because the mean of its divisors is an integer number (25085996400).

Almost surely, 2^50171992799 is an apocalyptic number.

50171992799 is a deficient number, since it is larger than the sum of its proper divisors (1).

50171992799 is an equidigital number, since it uses as much as digits as its factorization.

50171992799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3214890, while the sum is 59.

The spelling of 50171992799 in words is "fifty billion, one hundred seventy-one million, nine hundred ninety-two thousand, seven hundred ninety-nine".