55066621264 has 20 divisors (see below), whose sum is σ = 106742863456. Its totient is φ = 27520075872.

The previous prime is 55066621163. The next prime is 55066621271. The reversal of 55066621264 is 46212666055.

It is a happy number.

55066621264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55066621264.

It is a congruent 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, 792804 + ... + 859459.

Almost surely, 2^55066621264 is an apocalyptic number.

It is an amenable number.

55066621264 is a deficient number, since it is larger than the sum of its proper divisors (51676242192).

55066621264 is a wasteful number, since it uses less digits than its factorization.

55066621264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654354 (or 1654348 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 55066621264 in words is "fifty-five billion, sixty-six million, six hundred twenty-one thousand, two hundred sixty-four".