50664398251 has 2 divisors, whose sum is σ = 50664398252. Its totient is φ = 50664398250.

The previous prime is 50664398221. The next prime is 50664398311. The reversal of 50664398251 is 15289346605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50664398251 - 2¹⁵ = 50664365483 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50664398195 and 50664398204.

It is not a weakly prime, because it can be changed into another prime (50664398201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25332199125 + 25332199126.

It is an arithmetic number, because the mean of its divisors is an integer number (25332199126).

Almost surely, 2^50664398251 is an apocalyptic number.

50664398251 is a deficient number, since it is larger than the sum of its proper divisors (1).

50664398251 is an equidigital number, since it uses as much as digits as its factorization.

50664398251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 50664398251 in words is "fifty billion, six hundred sixty-four million, three hundred ninety-eight thousand, two hundred fifty-one".