137593860995209 has 2 divisors, whose sum is σ = 137593860995210. Its totient is φ = 137593860995208.

The previous prime is 137593860995207. The next prime is 137593860995303. The reversal of 137593860995209 is 902599068395731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119810603314809 + 17783257680400 = 10945803^2 + 4217020^2 .

It is a cyclic number.

It is not a de Polignac number, because 137593860995209 - 2¹ = 137593860995207 is a prime.

Together with 137593860995207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (137593860995203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68796930497604 + 68796930497605.

It is an arithmetic number, because the mean of its divisors is an integer number (68796930497605).

Almost surely, 2^{137593860995209} is an apocalyptic number.

It is an amenable number.

137593860995209 is a deficient number, since it is larger than the sum of its proper divisors (1).

137593860995209 is an equidigital number, since it uses as much as digits as its factorization.

137593860995209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 992023200, while the sum is 76.

The spelling of 137593860995209 in words is "one hundred thirty-seven trillion, five hundred ninety-three billion, eight hundred sixty million, nine hundred ninety-five thousand, two hundred nine".