138964057605097 has 2 divisors, whose sum is σ = 138964057605098. Its totient is φ = 138964057605096.

The previous prime is 138964057605047. The next prime is 138964057605169. The reversal of 138964057605097 is 790506750469831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118227108886441 + 20736948718656 = 10873229^2 + 4553784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138964057605097 is a prime.

It is a super-2 number, since 2×138964057605097² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138964057605047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69482028802548 + 69482028802549.

It is an arithmetic number, because the mean of its divisors is an integer number (69482028802549).

Almost surely, 2^{138964057605097} is an apocalyptic number.

It is an amenable number.

138964057605097 is a deficient number, since it is larger than the sum of its proper divisors (1).

138964057605097 is an equidigital number, since it uses as much as digits as its factorization.

138964057605097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 342921600, while the sum is 70.

The spelling of 138964057605097 in words is "one hundred thirty-eight trillion, nine hundred sixty-four billion, fifty-seven million, six hundred five thousand, ninety-seven".