891132945696 has 576 divisors, whose sum is σ = 3156298629120. Its totient is φ = 232794777600.

The previous prime is 891132945691. The next prime is 891132945739. The reversal of 891132945696 is 696549231198.

891132945696 is a `hidden beast` number, since 8 + 91 + 1 + 3 + 2 + 9 + 456 + 96 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (891132945691) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 179988021 + ... + 179992971.

It is an arithmetic number, because the mean of its divisors is an integer number (5479685120).

Almost surely, 2^891132945696 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 891132945696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578149314560).

891132945696 is an abundant number, since it is smaller than the sum of its proper divisors (2265165683424).

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

891132945696 is a wasteful number, since it uses less digits than its factorization.

891132945696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157 (or 5146 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The spelling of 891132945696 in words is "eight hundred ninety-one billion, one hundred thirty-two million, nine hundred forty-five thousand, six hundred ninety-six".