11562717617 has 4 divisors (see below), whose sum is σ = 12613873776. Its totient is φ = 10511561460.

The previous prime is 11562717613. The next prime is 11562717679. The reversal of 11562717617 is 71671726511.

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.

It is a cyclic number.

It is not a de Polignac number, because 11562717617 - 2² = 11562717613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11562717613) 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, 525578063 + ... + 525578084.

It is an arithmetic number, because the mean of its divisors is an integer number (3153468444).

Almost surely, 2^11562717617 is an apocalyptic number.

It is an amenable number.

11562717617 is a deficient number, since it is larger than the sum of its proper divisors (1051156159).

11562717617 is a wasteful number, since it uses less digits than its factorization.

11562717617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051156158.

The product of its digits is 123480, while the sum is 44.

The spelling of 11562717617 in words is "eleven billion, five hundred sixty-two million, seven hundred seventeen thousand, six hundred seventeen".