50986674989 has 2 divisors, whose sum is σ = 50986674990. Its totient is φ = 50986674988.

The previous prime is 50986674889. The next prime is 50986675001. The reversal of 50986674989 is 98947668905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50150019364 + 836655625 = 223942^2 + 28925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50986674989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50986674889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25493337494 + 25493337495.

It is an arithmetic number, because the mean of its divisors is an integer number (25493337495).

Almost surely, 2^50986674989 is an apocalyptic number.

It is an amenable number.

50986674989 is a deficient number, since it is larger than the sum of its proper divisors (1).

50986674989 is an equidigital number, since it uses as much as digits as its factorization.

50986674989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235146240, while the sum is 71.

The spelling of 50986674989 in words is "fifty billion, nine hundred eighty-six million, six hundred seventy-four thousand, nine hundred eighty-nine".