50563698431 has 2 divisors, whose sum is σ = 50563698432. Its totient is φ = 50563698430.

The previous prime is 50563698421. The next prime is 50563698487. The reversal of 50563698431 is 13489636505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50563698431 is a prime.

It is a super-2 number, since 2×50563698431² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50563698431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50563698421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25281849215 + 25281849216.

It is an arithmetic number, because the mean of its divisors is an integer number (25281849216).

Almost surely, 2^50563698431 is an apocalyptic number.

50563698431 is a deficient number, since it is larger than the sum of its proper divisors (1).

50563698431 is an equidigital number, since it uses as much as digits as its factorization.

50563698431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 50563698431 in words is "fifty billion, five hundred sixty-three million, six hundred ninety-eight thousand, four hundred thirty-one".