64663204368 has 180 divisors, whose sum is σ = 206424643632. Its totient is φ = 17388241920.

The previous prime is 64663204349. The next prime is 64663204379. The reversal of 64663204368 is 86340236646.

It is a happy number.

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 35 ways as a sum of consecutive naturals, for example, 632163 + ... + 727293.

Almost surely, 2^64663204368 is an apocalyptic number.

64663204368 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64663204368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103212321816).

64663204368 is an abundant number, since it is smaller than the sum of its proper divisors (141761439264).

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

64663204368 is a wasteful number, since it uses less digits than its factorization.

64663204368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95190 (or 95160 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 64663204368 in words is "sixty-four billion, six hundred sixty-three million, two hundred four thousand, three hundred sixty-eight".