11656189963 has 4 divisors (see below), whose sum is σ = 12715843608. Its totient is φ = 10596536320.

The previous prime is 11656189949. The next prime is 11656189967. The reversal of 11656189963 is 36998165611.

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

It is a cyclic number.

It is not a de Polignac number, because 11656189963 - 2²⁹ = 11119319051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11656189967) 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, 529826806 + ... + 529826827.

It is an arithmetic number, because the mean of its divisors is an integer number (3178960902).

Almost surely, 2^11656189963 is an apocalyptic number.

11656189963 is a deficient number, since it is larger than the sum of its proper divisors (1059653645).

11656189963 is a wasteful number, since it uses less digits than its factorization.

11656189963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059653644.

The product of its digits is 2099520, while the sum is 55.

The spelling of 11656189963 in words is "eleven billion, six hundred fifty-six million, one hundred eighty-nine thousand, nine hundred sixty-three".