50616997609 has 2 divisors, whose sum is σ = 50616997610. Its totient is φ = 50616997608.

The previous prime is 50616997601. The next prime is 50616997637. The reversal of 50616997609 is 90679961605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50517057600 + 99940009 = 224760^2 + 9997^2 .

It is a cyclic number.

It is not a de Polignac number, because 50616997609 - 2³ = 50616997601 is a prime.

It is not a weakly prime, because it can be changed into another prime (50616997601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25308498804 + 25308498805.

It is an arithmetic number, because the mean of its divisors is an integer number (25308498805).

Almost surely, 2^50616997609 is an apocalyptic number.

It is an amenable number.

50616997609 is a deficient number, since it is larger than the sum of its proper divisors (1).

50616997609 is an equidigital number, since it uses as much as digits as its factorization.

50616997609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5511240, while the sum is 58.

The spelling of 50616997609 in words is "fifty billion, six hundred sixteen million, nine hundred ninety-seven thousand, six hundred nine".