50640854497 has 2 divisors, whose sum is σ = 50640854498. Its totient is φ = 50640854496.

The previous prime is 50640854437. The next prime is 50640854501. The reversal of 50640854497 is 79445804605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46057022881 + 4583831616 = 214609^2 + 67704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50640854497 is a prime.

It is a super-2 number, since 2×50640854497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50640854437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25320427248 + 25320427249.

It is an arithmetic number, because the mean of its divisors is an integer number (25320427249).

Almost surely, 2^50640854497 is an apocalyptic number.

It is an amenable number.

50640854497 is a deficient number, since it is larger than the sum of its proper divisors (1).

50640854497 is an equidigital number, since it uses as much as digits as its factorization.

50640854497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 50640854497 in words is "fifty billion, six hundred forty million, eight hundred fifty-four thousand, four hundred ninety-seven".