55607568144 has 20 divisors (see below), whose sum is σ = 143652884496. Its totient is φ = 18535856032.

The previous prime is 55607568131. The next prime is 55607568167. The reversal of 55607568144 is 44186570655.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579245454 + ... + 579245549.

Almost surely, 2^55607568144 is an apocalyptic number.

It is an amenable number.

55607568144 is an abundant number, since it is smaller than the sum of its proper divisors (88045316352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55607568144 is a wasteful number, since it uses less digits than its factorization.

55607568144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158491014 (or 1158491008 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 55607568144 in words is "fifty-five billion, six hundred seven million, five hundred sixty-eight thousand, one hundred forty-four".