139733240657 has 2 divisors, whose sum is σ = 139733240658. Its totient is φ = 139733240656.

The previous prime is 139733240617. The next prime is 139733240671. The reversal of 139733240657 is 756042337931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109375056961 + 30358183696 = 330719^2 + 174236^2 .

It is a cyclic number.

It is not a de Polignac number, because 139733240657 - 2²⁴ = 139716463441 is a prime.

It is not a weakly prime, because it can be changed into another prime (139733240617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69866620328 + 69866620329.

It is an arithmetic number, because the mean of its divisors is an integer number (69866620329).

Almost surely, 2^139733240657 is an apocalyptic number.

It is an amenable number.

139733240657 is a deficient number, since it is larger than the sum of its proper divisors (1).

139733240657 is an equidigital number, since it uses as much as digits as its factorization.

139733240657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 139733240657 in words is "one hundred thirty-nine billion, seven hundred thirty-three million, two hundred forty thousand, six hundred fifty-seven".