55664550464 has 28 divisors (see below), whose sum is σ = 110468528364. Its totient is φ = 27829960704.

The previous prime is 55664550449. The next prime is 55664550499. The reversal of 55664550464 is 46405546655.

55664550464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4131918400 + 51532632064 = 64280^2 + 227008^2 .

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, 946364 + ... + 1003460.

Almost surely, 2^55664550464 is an apocalyptic number.

It is an amenable number.

55664550464 is a deficient number, since it is larger than the sum of its proper divisors (54803977900).

55664550464 is a wasteful number, since it uses less digits than its factorization.

55664550464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72342 (or 72332 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 50.

The spelling of 55664550464 in words is "fifty-five billion, six hundred sixty-four million, five hundred fifty thousand, four hundred sixty-four".