64440332601024 has 224 divisors, whose sum is σ = 175035391660800. Its totient is φ = 20915562147840.

The previous prime is 64440332601023. The next prime is 64440332601041. The reversal of 64440332601024 is 42010623304446.

It is a super-2 number, since 2×64440332601024² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64440332601023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5051364054 + ... + 5051376810.

Almost surely, 2^{64440332601024} is an apocalyptic number.

64440332601024 is a gapful number since it is divisible by the number (64) 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 64440332601024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87517695830400).

64440332601024 is an abundant number, since it is smaller than the sum of its proper divisors (110595059059776).

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

64440332601024 is a wasteful number, since it uses less digits than its factorization.

64440332601024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17031 (or 17021 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 39.

The spelling of 64440332601024 in words is "sixty-four trillion, four hundred forty billion, three hundred thirty-two million, six hundred one thousand, twenty-four".