11677944517 has 4 divisors (see below), whose sum is σ = 11875875840. Its totient is φ = 11480013196.

The previous prime is 11677944511. The next prime is 11677944637. The reversal of 11677944517 is 71544977611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71544977611 = 71 ⋅1007675741.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11677944517 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 (11677944511) 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, 98965573 + ... + 98965690.

It is an arithmetic number, because the mean of its divisors is an integer number (2968968960).

Almost surely, 2^11677944517 is an apocalyptic number.

It is an amenable number.

11677944517 is a deficient number, since it is larger than the sum of its proper divisors (197931323).

11677944517 is an equidigital number, since it uses as much as digits as its factorization.

11677944517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197931322.

The product of its digits is 1481760, while the sum is 52.

The spelling of 11677944517 in words is "eleven billion, six hundred seventy-seven million, nine hundred forty-four thousand, five hundred seventeen".