136899958349923 has 2 divisors, whose sum is σ = 136899958349924. Its totient is φ = 136899958349922.

The previous prime is 136899958349911. The next prime is 136899958349993. The reversal of 136899958349923 is 329943859998631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136899958349923 is a prime.

It is not a weakly prime, because it can be changed into another prime (136899958349993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68449979174961 + 68449979174962.

It is an arithmetic number, because the mean of its divisors is an integer number (68449979174962).

Almost surely, 2^{136899958349923} is an apocalyptic number.

136899958349923 is a deficient number, since it is larger than the sum of its proper divisors (1).

136899958349923 is an equidigital number, since it uses as much as digits as its factorization.

136899958349923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24488801280, while the sum is 88.

The spelling of 136899958349923 in words is "one hundred thirty-six trillion, eight hundred ninety-nine billion, nine hundred fifty-eight million, three hundred forty-nine thousand, nine hundred twenty-three".