11561652079 has 4 divisors (see below), whose sum is σ = 11700949176. Its totient is φ = 11422354984.

The previous prime is 11561652073. The next prime is 11561652119. The reversal of 11561652079 is 97025616511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11561652079 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 (11561652073) 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, 69648424 + ... + 69648589.

It is an arithmetic number, because the mean of its divisors is an integer number (2925237294).

Almost surely, 2^11561652079 is an apocalyptic number.

11561652079 is a deficient number, since it is larger than the sum of its proper divisors (139297097).

11561652079 is an equidigital number, since it uses as much as digits as its factorization.

11561652079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139297096.

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 11561652079 in words is "eleven billion, five hundred sixty-one million, six hundred fifty-two thousand, seventy-nine".