64544535323604 has 72 divisors (see below), whose sum is σ = 188822269359360. Its totient is φ = 18207861676992.

The previous prime is 64544535323599. The next prime is 64544535323627. The reversal of 64544535323604 is 40632353544546.

64544535323604 is a `hidden beast` number, since 6 + 4 + 5 + 4 + 4 + 5 + 3 + 5 + 3 + 23 + 604 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1621050399 + ... + 1621090214.

It is an arithmetic number, because the mean of its divisors is an integer number (2622531518880).

Almost surely, 2^{64544535323604} is an apocalyptic number.

It is an amenable number.

64544535323604 is an abundant number, since it is smaller than the sum of its proper divisors (124277734035756).

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

64544535323604 is a wasteful number, since it uses less digits than its factorization.

64544535323604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242140709 (or 3242140704 counting only the distinct ones).

The product of its (nonzero) digits is 62208000, while the sum is 54.

The spelling of 64544535323604 in words is "sixty-four trillion, five hundred forty-four billion, five hundred thirty-five million, three hundred twenty-three thousand, six hundred four".