11563021623 has 8 divisors (see below), whose sum is σ = 15452483200. Its totient is φ = 7691120568.

The previous prime is 11563021619. The next prime is 11563021627. The reversal of 11563021623 is 32612036511.

It is an interprime number because it is at equal distance from previous prime (11563021619) and next prime (11563021627).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11563021623 - 2² = 11563021619 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 (11563021627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4388593 + ... + 4391226.

It is an arithmetic number, because the mean of its divisors is an integer number (1931560400).

Almost surely, 2^11563021623 is an apocalyptic number.

11563021623 is a deficient number, since it is larger than the sum of its proper divisors (3889461577).

11563021623 is an equidigital number, since it uses as much as digits as its factorization.

11563021623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780261.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 11563021623 in words is "eleven billion, five hundred sixty-three million, twenty-one thousand, six hundred twenty-three".