11663627663 has 4 divisors (see below), whose sum is σ = 11666864880. Its totient is φ = 11660390448.

The previous prime is 11663627659. The next prime is 11663627687. The reversal of 11663627663 is 36672636611.

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 11663627663 - 2² = 11663627659 is a prime.

It is a super-2 number, since 2×11663627663² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11663627863) 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, 1613198 + ... + 1620411.

It is an arithmetic number, because the mean of its divisors is an integer number (2916716220).

Almost surely, 2^11663627663 is an apocalyptic number.

11663627663 is a deficient number, since it is larger than the sum of its proper divisors (3237217).

11663627663 is an equidigital number, since it uses as much as digits as its factorization.

11663627663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237216.

The product of its digits is 979776, while the sum is 47.

The spelling of 11663627663 in words is "eleven billion, six hundred sixty-three million, six hundred twenty-seven thousand, six hundred sixty-three".