11936677657 has 4 divisors (see below), whose sum is σ = 11958108516. Its totient is φ = 11915246800.

The previous prime is 11936677637. The next prime is 11936677673. The reversal of 11936677657 is 75677663911.

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 5622150361 + 6314527296 = 74981^2 + 79464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11936677657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11936677637) 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, 10714594 + ... + 10715707.

It is an arithmetic number, because the mean of its divisors is an integer number (2989527129).

Almost surely, 2^11936677657 is an apocalyptic number.

It is an amenable number.

11936677657 is a deficient number, since it is larger than the sum of its proper divisors (21430859).

11936677657 is an equidigital number, since it uses as much as digits as its factorization.

11936677657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21430858.

The product of its digits is 10001880, while the sum is 58.

The spelling of 11936677657 in words is "eleven billion, nine hundred thirty-six million, six hundred seventy-seven thousand, six hundred fifty-seven".