139361629697 has 2 divisors, whose sum is σ = 139361629698. Its totient is φ = 139361629696.

The previous prime is 139361629663. The next prime is 139361629711. The reversal of 139361629697 is 796926163931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73313143696 + 66048486001 = 270764^2 + 256999^2 .

It is a cyclic number.

It is not a de Polignac number, because 139361629697 - 2²⁸ = 139093194241 is a prime.

It is not a weakly prime, because it can be changed into another prime (139361629637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69680814848 + 69680814849.

It is an arithmetic number, because the mean of its divisors is an integer number (69680814849).

Almost surely, 2^139361629697 is an apocalyptic number.

It is an amenable number.

139361629697 is a deficient number, since it is larger than the sum of its proper divisors (1).

139361629697 is an equidigital number, since it uses as much as digits as its factorization.

139361629697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19840464, while the sum is 62.

The spelling of 139361629697 in words is "one hundred thirty-nine billion, three hundred sixty-one million, six hundred twenty-nine thousand, six hundred ninety-seven".