11640697677 has 20 divisors (see below), whose sum is σ = 19873361376. Its totient is φ = 6651826920.

The previous prime is 11640697667. The next prime is 11640697703. The reversal of 11640697677 is 77679604611.

It is not a de Polignac number, because 11640697677 - 2¹⁰ = 11640696653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640697667) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10264599 + ... + 10265732.

Almost surely, 2^11640697677 is an apocalyptic number.

It is an amenable number.

11640697677 is a deficient number, since it is larger than the sum of its proper divisors (8232663699).

11640697677 is an equidigital number, since it uses as much as digits as its factorization.

11640697677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20530350 (or 20530341 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The spelling of 11640697677 in words is "eleven billion, six hundred forty million, six hundred ninety-seven thousand, six hundred seventy-seven".