139676866591 has 2 divisors, whose sum is σ = 139676866592. Its totient is φ = 139676866590.

The previous prime is 139676866583. The next prime is 139676866619. The reversal of 139676866591 is 195668676931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139676866591 - 2³ = 139676866583 is a prime.

It is a super-2 number, since 2×139676866591² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139676866531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69838433295 + 69838433296.

It is an arithmetic number, because the mean of its divisors is an integer number (69838433296).

Almost surely, 2^139676866591 is an apocalyptic number.

139676866591 is a deficient number, since it is larger than the sum of its proper divisors (1).

139676866591 is an equidigital number, since it uses as much as digits as its factorization.

139676866591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88179840, while the sum is 67.

The spelling of 139676866591 in words is "one hundred thirty-nine billion, six hundred seventy-six million, eight hundred sixty-six thousand, five hundred ninety-one".