55618262464 has 42 divisors (see below), whose sum is σ = 111144729704. Its totient is φ = 27613449600.

The previous prime is 55618262443. The next prime is 55618262543. The reversal of 55618262464 is 46426281655.

It is a happy number.

55618262464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55618262464² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23182737 + ... + 23185135.

Almost surely, 2^55618262464 is an apocalyptic number.

It is an amenable number.

55618262464 is a deficient number, since it is larger than the sum of its proper divisors (55526467240).

55618262464 is an frugal number, since it uses more digits than its factorization.

55618262464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961 (or 2552 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 49.

The spelling of 55618262464 in words is "fifty-five billion, six hundred eighteen million, two hundred sixty-two thousand, four hundred sixty-four".