55645266663 has 18 divisors (see below), whose sum is σ = 93499190304. Its totient is φ = 31797294984.

The previous prime is 55645266659. The next prime is 55645266679. The reversal of 55645266663 is 36666254655.

It is not a de Polignac number, because 55645266663 - 2² = 55645266659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55645266763) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 63089431 + ... + 63090312.

Almost surely, 2^55645266663 is an apocalyptic number.

55645266663 is a deficient number, since it is larger than the sum of its proper divisors (37853923641).

55645266663 is a wasteful number, since it uses less digits than its factorization.

55645266663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126179763 (or 126179753 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 54.

The spelling of 55645266663 in words is "fifty-five billion, six hundred forty-five million, two hundred sixty-six thousand, six hundred sixty-three".