999957088000 has 288 divisors, whose sum is σ = 2745070840512. Its totient is φ = 360622080000.

The previous prime is 999957087977. The next prime is 999957088001. The reversal of 999957088000 is 880759999.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999957088001) 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, 17860050 + ... + 17915950.

It is an arithmetic number, because the mean of its divisors is an integer number (9531495974).

Almost surely, 2^999957088000 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 999957088000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372535420256).

999957088000 is an abundant number, since it is smaller than the sum of its proper divisors (1745113752512).

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

999957088000 is a wasteful number, since it uses less digits than its factorization.

999957088000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55988 (or 55964 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 64.

The spelling of 999957088000 in words is "nine hundred ninety-nine billion, nine hundred fifty-seven million, eighty-eight thousand".