136507257434377 has 4 divisors (see below), whose sum is σ = 136534018321156. Its totient is φ = 136480496547600.

The previous prime is 136507257434309. The next prime is 136507257434447. The reversal of 136507257434377 is 773434752705631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23123605307401 + 113383652126976 = 4808701^2 + 10648176^2 .

It is a cyclic number.

It is not a de Polignac number, because 136507257434377 - 2²⁷ = 136507123216649 is a prime.

It is a super-2 number, since 2×136507257434377² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136507257434477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13380435738 + ... + 13380445939.

It is an arithmetic number, because the mean of its divisors is an integer number (34133504580289).

Almost surely, 2^{136507257434377} is an apocalyptic number.

It is an amenable number.

136507257434377 is a deficient number, since it is larger than the sum of its proper divisors (26760886779).

136507257434377 is an equidigital number, since it uses as much as digits as its factorization.

136507257434377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26760886778.

The product of its (nonzero) digits is 311169600, while the sum is 64.

The spelling of 136507257434377 in words is "one hundred thirty-six trillion, five hundred seven billion, two hundred fifty-seven million, four hundred thirty-four thousand, three hundred seventy-seven".