136274646377 has 4 divisors (see below), whose sum is σ = 136284813636. Its totient is φ = 136264479120.

The previous prime is 136274646331. The next prime is 136274646397. The reversal of 136274646377 is 773646472631.

It is a happy number.

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 129793752361 + 6480894016 = 360269^2 + 80504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136274646377 is a prime.

It is a super-2 number, since 2×136274646377² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136274646307) 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, 5063498 + ... + 5090339.

It is an arithmetic number, because the mean of its divisors is an integer number (34071203409).

Almost surely, 2^136274646377 is an apocalyptic number.

It is an amenable number.

136274646377 is a deficient number, since it is larger than the sum of its proper divisors (10167259).

136274646377 is a wasteful number, since it uses less digits than its factorization.

136274646377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10167258.

The product of its digits is 21337344, while the sum is 56.

The spelling of 136274646377 in words is "one hundred thirty-six billion, two hundred seventy-four million, six hundred forty-six thousand, three hundred seventy-seven".