899221495431168 has 1080 divisors, whose sum is σ = 3356020298453760. Its totient is φ = 237156351344640.

The previous prime is 899221495431167. The next prime is 899221495431191. The reversal of 899221495431168 is 861134594122998.

899221495431168 is a `hidden beast` number, since 8 + 9 + 9 + 2 + 2 + 1 + 4 + 9 + 543 + 11 + 68 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 899221495431096 and 899221495431105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899221495431163) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3663126673 + ... + 3663372143.

It is an arithmetic number, because the mean of its divisors is an integer number (3107426202272).

Almost surely, 2^{899221495431168} 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 899221495431168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678010149226880).

899221495431168 is an abundant number, since it is smaller than the sum of its proper divisors (2456798803022592).

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

899221495431168 is a wasteful number, since it uses less digits than its factorization.

899221495431168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245548 (or 245496 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 72.

The spelling of 899221495431168 in words is "eight hundred ninety-nine trillion, two hundred twenty-one billion, four hundred ninety-five million, four hundred thirty-one thousand, one hundred sixty-eight".