899459721216 has 384 divisors, whose sum is σ = 3056403168000. Its totient is φ = 256030212096.

The previous prime is 899459721203. The next prime is 899459721247. The reversal of 899459721216 is 612127954998.

899459721216 is a `hidden beast` number, since 8 + 9 + 9 + 4 + 597 + 21 + 2 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (63).

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 31 ways as a sum of consecutive naturals, for example, 107214750 + ... + 107223138.

It is an arithmetic number, because the mean of its divisors is an integer number (7959383250).

Almost surely, 2^899459721216 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 899459721216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528201584000).

899459721216 is an abundant number, since it is smaller than the sum of its proper divisors (2156943446784).

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

899459721216 is a wasteful number, since it uses less digits than its factorization.

899459721216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8704 (or 8678 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 899459721216 in words is "eight hundred ninety-nine billion, four hundred fifty-nine million, seven hundred twenty-one thousand, two hundred sixteen".