136347247477 has 4 divisors (see below), whose sum is σ = 155825425696. Its totient is φ = 116869069260.

The previous prime is 136347247453. The next prime is 136347247493. The reversal of 136347247477 is 774742743631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136347247477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136347247427) 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, 9739089099 + ... + 9739089112.

It is an arithmetic number, because the mean of its divisors is an integer number (38956356424).

Almost surely, 2^136347247477 is an apocalyptic number.

It is an amenable number.

136347247477 is a deficient number, since it is larger than the sum of its proper divisors (19478178219).

136347247477 is an equidigital number, since it uses as much as digits as its factorization.

136347247477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19478178218.

The product of its digits is 16595712, while the sum is 55.

The spelling of 136347247477 in words is "one hundred thirty-six billion, three hundred forty-seven million, two hundred forty-seven thousand, four hundred seventy-seven".