199392006137 has 2 divisors, whose sum is σ = 199392006138. Its totient is φ = 199392006136.

The previous prime is 199392006131. The next prime is 199392006181. The reversal of 199392006137 is 731600293991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116920228096 + 82471778041 = 341936^2 + 287179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199392006137 is a prime.

It is a super-2 number, since 2×199392006137² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (199392006131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99696003068 + 99696003069.

It is an arithmetic number, because the mean of its divisors is an integer number (99696003069).

Almost surely, 2^199392006137 is an apocalyptic number.

It is an amenable number.

199392006137 is a deficient number, since it is larger than the sum of its proper divisors (1).

199392006137 is an equidigital number, since it uses as much as digits as its factorization.

199392006137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 551124, while the sum is 50.

The spelling of 199392006137 in words is "one hundred ninety-nine billion, three hundred ninety-two million, six thousand, one hundred thirty-seven".