64404606532608 has 264 divisors, whose sum is σ = 204198966487152. Its totient is φ = 20205365428224.

The previous prime is 64404606532561. The next prime is 64404606532619. The reversal of 64404606532608 is 80623560640446.

64404606532608 is a `hidden beast` number, since 6 + 4 + 4 + 0 + 4 + 606 + 5 + 3 + 26 + 0 + 8 = 666.

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

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, 3382435 + ... + 11842722.

Almost surely, 2^{64404606532608} is an apocalyptic number.

64404606532608 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64404606532608 is an abundant number, since it is smaller than the sum of its proper divisors (139794359954544).

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

64404606532608 is a wasteful number, since it uses less digits than its factorization.

64404606532608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15225209 (or 15225179 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 54.

The spelling of 64404606532608 in words is "sixty-four trillion, four hundred four billion, six hundred six million, five hundred thirty-two thousand, six hundred eight".