64335145968 has 40 divisors (see below), whose sum is σ = 184665698000. Its totient is φ = 21445048512.

The previous prime is 64335145921. The next prime is 64335145981. The reversal of 64335145968 is 86954153346.

64335145968 is a `hidden beast` number, since 6 + 4 + 3 + 35 + 14 + 596 + 8 = 666.

It is a super-2 number, since 2×64335145968² (a number of 22 digits) contains 22 as substring.

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 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 7 ways as a sum of consecutive naturals, for example, 74461543 + ... + 74462406.

It is an arithmetic number, because the mean of its divisors is an integer number (4616642450).

Almost surely, 2^64335145968 is an apocalyptic number.

It is an amenable number.

64335145968 is an abundant number, since it is smaller than the sum of its proper divisors (120330552032).

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

64335145968 is a wasteful number, since it uses less digits than its factorization.

64335145968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148923966 (or 148923954 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 64335145968 in words is "sixty-four billion, three hundred thirty-five million, one hundred forty-five thousand, nine hundred sixty-eight".