999475158528000 has 11232 divisors, whose sum is σ = 5222729007595008. Its totient is φ = 185178783744000.

The previous prime is 999475158527947. The next prime is 999475158528043. The reversal of 999475158528000 is 825851574999.

999475158528000 is a `hidden beast` number, since 9 + 9 + 9 + 4 + 7 + 515 + 85 + 28 + 0 + 0 + 0 = 666.

It is a super-2 number, since 2×999475158528000² (a number of 31 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 999475158528000.

It is a congruent number.

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 863 ways as a sum of consecutive naturals, for example, 52603955711991 + ... + 52603955712009.

It is an arithmetic number, because the mean of its divisors is an integer number (464986556944).

Almost surely, 2^{999475158528000} is an apocalyptic number.

999475158528000 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 999475158528000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2611364503797504).

999475158528000 is an abundant number, since it is smaller than the sum of its proper divisors (4223253849067008).

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

999475158528000 is a wasteful number, since it uses less digits than its factorization.

999475158528000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 326592000, while the sum is 72.

The spelling of 999475158528000 in words is "nine hundred ninety-nine trillion, four hundred seventy-five billion, one hundred fifty-eight million, five hundred twenty-eight thousand".