64094891328 has 224 divisors, whose sum is σ = 204134313600. Its totient is φ = 19720336896.

The previous prime is 64094891321. The next prime is 64094891339. The reversal of 64094891328 is 82319849046.

64094891328 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 (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64094891321) 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, 3787975 + ... + 3804857.

It is an arithmetic number, because the mean of its divisors is an integer number (911313900).

Almost surely, 2^64094891328 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 64094891328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102067156800).

64094891328 is an abundant number, since it is smaller than the sum of its proper divisors (140039422272).

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

64094891328 is a wasteful number, since it uses less digits than its factorization.

64094891328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16943 (or 16901 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 64094891328 in words is "sixty-four billion, ninety-four million, eight hundred ninety-one thousand, three hundred twenty-eight".