899521572768 has 768 divisors, whose sum is σ = 3212387942400. Its totient is φ = 213741711360.

The previous prime is 899521572767. The next prime is 899521572779. The reversal of 899521572768 is 867275125998.

It is not an unprimeable number, because it can be changed into a prime (899521572767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 303583255 + ... + 303586217.

It is an arithmetic number, because the mean of its divisors is an integer number (4182796800).

Almost surely, 2^899521572768 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 899521572768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606193971200).

899521572768 is an abundant number, since it is smaller than the sum of its proper divisors (2312866369632).

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

899521572768 is a wasteful number, since it uses less digits than its factorization.

899521572768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105 (or 3097 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 69.

The spelling of 899521572768 in words is "eight hundred ninety-nine billion, five hundred twenty-one million, five hundred seventy-two thousand, seven hundred sixty-eight".