11563554655 has 8 divisors (see below), whose sum is σ = 13916256912. Its totient is φ = 9224182848.

The previous prime is 11563554647. The next prime is 11563554719. The reversal of 11563554655 is 55645536511.

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

It is a cyclic number.

It is not a de Polignac number, because 11563554655 - 2³ = 11563554647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3330702 + ... + 3334171.

It is an arithmetic number, because the mean of its divisors is an integer number (1739532114).

Almost surely, 2^11563554655 is an apocalyptic number.

11563554655 is a deficient number, since it is larger than the sum of its proper divisors (2352702257).

11563554655 is an equidigital number, since it uses as much as digits as its factorization.

11563554655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665225.

The product of its digits is 1350000, while the sum is 46.

The spelling of 11563554655 in words is "eleven billion, five hundred sixty-three million, five hundred fifty-four thousand, six hundred fifty-five".