55663888911 has 4 divisors (see below), whose sum is σ = 74218518552. Its totient is φ = 37109259272.

The previous prime is 55663888877. The next prime is 55663888933. The reversal of 55663888911 is 11988836655.

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 55663888911 - 2¹³ = 55663880719 is a prime.

It is a super-2 number, since 2×55663888911² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55663888981) 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, 9277314816 + ... + 9277314821.

It is an arithmetic number, because the mean of its divisors is an integer number (18554629638).

Almost surely, 2^55663888911 is an apocalyptic number.

55663888911 is a deficient number, since it is larger than the sum of its proper divisors (18554629641).

55663888911 is a wasteful number, since it uses less digits than its factorization.

55663888911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18554629640.

The product of its digits is 12441600, while the sum is 60.

The spelling of 55663888911 in words is "fifty-five billion, six hundred sixty-three million, eight hundred eighty-eight thousand, nine hundred eleven".