139380497197 has 2 divisors, whose sum is σ = 139380497198. Its totient is φ = 139380497196.

The previous prime is 139380497159. The next prime is 139380497219. The reversal of 139380497197 is 791794083931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128716630441 + 10663866756 = 358771^2 + 103266^2 .

It is a cyclic number.

It is not a de Polignac number, because 139380497197 - 2¹⁵ = 139380464429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139380497297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69690248598 + 69690248599.

It is an arithmetic number, because the mean of its divisors is an integer number (69690248599).

Almost surely, 2^139380497197 is an apocalyptic number.

It is an amenable number.

139380497197 is a deficient number, since it is larger than the sum of its proper divisors (1).

139380497197 is an equidigital number, since it uses as much as digits as its factorization.

139380497197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 61.

The spelling of 139380497197 in words is "one hundred thirty-nine billion, three hundred eighty million, four hundred ninety-seven thousand, one hundred ninety-seven".