64044160320 has 672 divisors, whose sum is σ = 251347345920. Its totient is φ = 13737185280.

The previous prime is 64044160319. The next prime is 64044160379. The reversal of 64044160320 is 2306144046.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 117082287 + ... + 117082833.

Almost surely, 2^64044160320 is an apocalyptic number.

64044160320 is a gapful number since it is divisible by the number (60) 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 64044160320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125673672960).

64044160320 is an abundant number, since it is smaller than the sum of its proper divisors (187303185600).

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

64044160320 is a wasteful number, since it uses less digits than its factorization.

64044160320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 64044160320 in words is "sixty-four billion, forty-four million, one hundred sixty thousand, three hundred twenty".