55153438660 has 24 divisors (see below), whose sum is σ = 115850649600. Its totient is φ = 22055960544.

The previous prime is 55153438643. The next prime is 55153438709. The reversal of 55153438660 is 6683435155.

It is a self number, because there is not a number n which added to its sum of digits gives 55153438660.

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, 254404 + ... + 418363.

It is an arithmetic number, because the mean of its divisors is an integer number (4827110400).

Almost surely, 2^55153438660 is an apocalyptic number.

It is an amenable number.

55153438660 is an abundant number, since it is smaller than the sum of its proper divisors (60697210940).

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

55153438660 is a wasteful number, since it uses less digits than its factorization.

55153438660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676875 (or 676873 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 55153438660 in words is "fifty-five billion, one hundred fifty-three million, four hundred thirty-eight thousand, six hundred sixty".