64553455264 has 72 divisors (see below), whose sum is σ = 137437764660. Its totient is φ = 29808565248.

The previous prime is 64553455249. The next prime is 64553455289. The reversal of 64553455264 is 46255435546.

It can be written as a sum of positive squares in 2 ways, for example, as 61656862864 + 2896592400 = 248308^2 + 53820^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425164 + ... + 556660.

Almost surely, 2^64553455264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64553455264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68718882330).

64553455264 is an abundant number, since it is smaller than the sum of its proper divisors (72884309396).

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

64553455264 is a wasteful number, since it uses less digits than its factorization.

64553455264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131582 (or 131551 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 49.

The spelling of 64553455264 in words is "sixty-four billion, five hundred fifty-three million, four hundred fifty-five thousand, two hundred sixty-four".