964491861024 has 72 divisors (see below), whose sum is σ = 2787737284332. Its totient is φ = 316226833920.

The previous prime is 964491861019. The next prime is 964491861071. The reversal of 964491861024 is 420168194469.

964491861024 is a `hidden beast` number, since 9 + 6 + 4 + 4 + 9 + 18 + 610 + 2 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 962478723600 + 2013137424 = 981060^2 + 44868^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27432679 + ... + 27467814.

Almost surely, 2^964491861024 is an apocalyptic number.

It is an amenable number.

964491861024 is an abundant number, since it is smaller than the sum of its proper divisors (1823245423308).

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

964491861024 is a wasteful number, since it uses less digits than its factorization.

964491861024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54900570 (or 54900559 counting only the distinct ones).

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

The spelling of 964491861024 in words is "nine hundred sixty-four billion, four hundred ninety-one million, eight hundred sixty-one thousand, twenty-four".