64068135168 has 72 divisors (see below), whose sum is σ = 170565978688. Its totient is φ = 21349619712.

The previous prime is 64068135149. The next prime is 64068135179. The reversal of 64068135168 is 86153186046.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3017646 + ... + 3038802.

Almost surely, 2^64068135168 is an apocalyptic number.

It is an amenable number.

64068135168 is an abundant number, since it is smaller than the sum of its proper divisors (106497843520).

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

64068135168 is a wasteful number, since it uses less digits than its factorization.

64068135168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25119 (or 25105 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 64068135168 in words is "sixty-four billion, sixty-eight million, one hundred thirty-five thousand, one hundred sixty-eight".