4645644864 has 112 divisors (see below), whose sum is σ = 14098682496. Its totient is φ = 1322496000.

The previous prime is 4645644847. The next prime is 4645644877. The reversal of 4645644864 is 4684465464.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371514 + ... + 383814.

Almost surely, 2^4645644864 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 4645644864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7049341248).

4645644864 is an abundant number, since it is smaller than the sum of its proper divisors (9453037632).

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

4645644864 is a wasteful number, since it uses less digits than its factorization.

4645644864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12604 (or 12594 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 51.

The square root of 4645644864 is about 68158.9675978150. The cubic root of 4645644864 is about 1668.5862829862.

The spelling of 4645644864 in words is "four billion, six hundred forty-five million, six hundred forty-four thousand, eight hundred sixty-four".