64644201335724 has 96 divisors (see below), whose sum is σ = 160301418310656. Its totient is φ = 20205440271360.

The previous prime is 64644201335669. The next prime is 64644201335761. The reversal of 64644201335724 is 42753310244646.

64644201335724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76017387 + ... + 76863069.

It is an arithmetic number, because the mean of its divisors is an integer number (1669806440736).

Almost surely, 2^{64644201335724} 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 64644201335724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80150709155328).

64644201335724 is an abundant number, since it is smaller than the sum of its proper divisors (95657216974932).

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

64644201335724 is a wasteful number, since it uses less digits than its factorization.

64644201335724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847095 (or 847093 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 51.

The spelling of 64644201335724 in words is "sixty-four trillion, six hundred forty-four billion, two hundred one million, three hundred thirty-five thousand, seven hundred twenty-four".