964394433440 has 144 divisors (see below), whose sum is σ = 2547673884000. Its totient is φ = 343957082112.

The previous prime is 964394433439. The next prime is 964394433451. The reversal of 964394433440 is 44334493469.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329711 + ... + 1427409.

It is an arithmetic number, because the mean of its divisors is an integer number (17692179750).

Almost surely, 2^964394433440 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 964394433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1273836942000).

964394433440 is an abundant number, since it is smaller than the sum of its proper divisors (1583279450560).

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

964394433440 is a wasteful number, since it uses less digits than its factorization.

964394433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097767 (or 1097742 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 53.

The spelling of 964394433440 in words is "nine hundred sixty-four billion, three hundred ninety-four million, four hundred thirty-three thousand, four hundred forty".