64604546784 has 96 divisors (see below), whose sum is σ = 193522724640. Its totient is φ = 20952815616.

The previous prime is 64604546761. The next prime is 64604546849. The reversal of 64604546784 is 48764540646.

It is a happy number.

64604546784 is a `hidden beast` number, since 6 + 4 + 60 + 45 + 467 + 84 = 666.

64604546784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 64604546784.

It is a congruent number.

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, 978489 + ... + 1042424.

It is an arithmetic number, because the mean of its divisors is an integer number (2015861715).

Almost surely, 2^64604546784 is an apocalyptic number.

It is an amenable number.

64604546784 is an abundant number, since it is smaller than the sum of its proper divisors (128918177856).

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

64604546784 is a wasteful number, since it uses less digits than its factorization.

64604546784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020969 (or 2020955 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 54.

The spelling of 64604546784 in words is "sixty-four billion, six hundred four million, five hundred forty-six thousand, seven hundred eighty-four".