891836068920 has 128 divisors (see below), whose sum is σ = 2726828582400. Its totient is φ = 233263906304.

The previous prime is 891836068793. The next prime is 891836068939. The reversal of 891836068920 is 29860638198.

It is a happy number.

891836068920 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22488229 + ... + 22527851.

It is an arithmetic number, because the mean of its divisors is an integer number (21303348300).

Almost surely, 2^891836068920 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 891836068920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363414291200).

891836068920 is an abundant number, since it is smaller than the sum of its proper divisors (1834992513480).

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

891836068920 is a wasteful number, since it uses less digits than its factorization.

891836068920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43229 (or 43225 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 60.

The spelling of 891836068920 in words is "eight hundred ninety-one billion, eight hundred thirty-six million, sixty-eight thousand, nine hundred twenty".