136129636807 has 4 divisors (see below), whose sum is σ = 136132561096. Its totient is φ = 136126712520.

The previous prime is 136129636751. The next prime is 136129636829. The reversal of 136129636807 is 708636921631.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136129636807 is a prime.

It is the 368958-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136129636837) by changing a digit.

It is a nontrivial repunit in base 368957.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391169 + ... + 1485802.

It is an arithmetic number, because the mean of its divisors is an integer number (34033140274).

Almost surely, 2^136129636807 is an apocalyptic number.

136129636807 is a deficient number, since it is larger than the sum of its proper divisors (2924289).

136129636807 is an equidigital number, since it uses as much as digits as its factorization.

136129636807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924288.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 136129636807 in words is "one hundred thirty-six billion, one hundred twenty-nine million, six hundred thirty-six thousand, eight hundred seven".