139681677287 has 2 divisors, whose sum is σ = 139681677288. Its totient is φ = 139681677286.

The previous prime is 139681677283. The next prime is 139681677323. The reversal of 139681677287 is 782776186931.

It is a weak prime.

It is an emirp because it is prime and its reverse (782776186931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139681677287 - 2² = 139681677283 is a prime.

It is a super-2 number, since 2×139681677287² (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 (139681677283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69840838643 + 69840838644.

It is an arithmetic number, because the mean of its divisors is an integer number (69840838644).

Almost surely, 2^139681677287 is an apocalyptic number.

139681677287 is a deficient number, since it is larger than the sum of its proper divisors (1).

139681677287 is an equidigital number, since it uses as much as digits as its factorization.

139681677287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42674688, while the sum is 65.

The spelling of 139681677287 in words is "one hundred thirty-nine billion, six hundred eighty-one million, six hundred seventy-seven thousand, two hundred eighty-seven".