64109590272 has 648 divisors, whose sum is σ = 234497687424. Its totient is φ = 16484622336.

The previous prime is 64109590271. The next prime is 64109590309. The reversal of 64109590272 is 27209590146.

It is a super-2 number, since 2×64109590272² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64109590271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 117201903 + ... + 117202449.

Almost surely, 2^64109590272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64109590272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117248843712).

64109590272 is an abundant number, since it is smaller than the sum of its proper divisors (170388097152).

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

64109590272 is a wasteful number, since it uses less digits than its factorization.

64109590272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 64109590272 in words is "sixty-four billion, one hundred nine million, five hundred ninety thousand, two hundred seventy-two".