999275664960 has 168 divisors, whose sum is σ = 3437627034816. Its totient is φ = 266432025600.

The previous prime is 999275664953. The next prime is 999275664983. The reversal of 999275664960 is 69466572999.

999275664960 is a `hidden beast` number, since 9 + 9 + 9 + 2 + 75 + 66 + 496 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 21435597 + ... + 21482163.

Almost surely, 2^999275664960 is an apocalyptic number.

999275664960 is a gapful number since it is divisible by the number (90) 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 999275664960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1718813517408).

999275664960 is an abundant number, since it is smaller than the sum of its proper divisors (2438351369856).

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

999275664960 is a wasteful number, since it uses less digits than its factorization.

999275664960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54041 (or 54028 counting only the distinct ones).

The product of its (nonzero) digits is 396809280, while the sum is 72.

The spelling of 999275664960 in words is "nine hundred ninety-nine billion, two hundred seventy-five million, six hundred sixty-four thousand, nine hundred sixty".