136655747377 has 4 divisors (see below), whose sum is σ = 137909469940. Its totient is φ = 135402024816.

The previous prime is 136655747329. The next prime is 136655747381. The reversal of 136655747377 is 773747556631.

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 101330168976 + 35325578401 = 318324^2 + 187951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136655747377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136655747317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626861118 + ... + 626861335.

It is an arithmetic number, because the mean of its divisors is an integer number (34477367485).

Almost surely, 2^136655747377 is an apocalyptic number.

It is an amenable number.

136655747377 is a deficient number, since it is larger than the sum of its proper divisors (1253722563).

136655747377 is a wasteful number, since it uses less digits than its factorization.

136655747377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253722562.

The product of its digits is 77792400, while the sum is 61.

The spelling of 136655747377 in words is "one hundred thirty-six billion, six hundred fifty-five million, seven hundred forty-seven thousand, three hundred seventy-seven".