64085446368 has 72 divisors (see below), whose sum is σ = 185230628856. Its totient is φ = 21011616000.

The previous prime is 64085446357. The next prime is 64085446393. The reversal of 64085446368 is 86364458046.

64085446368 is a `hidden beast` number, since 6 + 40 + 85 + 4 + 463 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1806358 + ... + 1841493.

It is an arithmetic number, because the mean of its divisors is an integer number (2572647623).

Almost surely, 2^64085446368 is an apocalyptic number.

It is an amenable number.

64085446368 is an abundant number, since it is smaller than the sum of its proper divisors (121145182488).

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

64085446368 is a wasteful number, since it uses less digits than its factorization.

64085446368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3647928 (or 3647917 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 54.

The spelling of 64085446368 in words is "sixty-four billion, eighty-five million, four hundred forty-six thousand, three hundred sixty-eight".