64575042784 has 72 divisors (see below), whose sum is σ = 148231481328. Its totient is φ = 27610813440.

The previous prime is 64575042781. The next prime is 64575042787. The reversal of 64575042784 is 48724057546.

64575042784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64575042781) and next prime (64575042787).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64575042781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 631389 + ... + 726499.

It is an arithmetic number, because the mean of its divisors is an integer number (2058770574).

Almost surely, 2^64575042784 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 64575042784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74115740664).

64575042784 is an abundant number, since it is smaller than the sum of its proper divisors (83656438544).

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

64575042784 is a wasteful number, since it uses less digits than its factorization.

64575042784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95568 (or 95553 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 52.

The spelling of 64575042784 in words is "sixty-four billion, five hundred seventy-five million, forty-two thousand, seven hundred eighty-four".