89391561336 has 512 divisors, whose sum is σ = 317824819200. Its totient is φ = 22608875520.

The previous prime is 89391561307. The next prime is 89391561367. The reversal of 89391561336 is 63316519398.

89391561336 is a `hidden beast` number, since 8 + 9 + 3 + 9 + 15 + 613 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 108090955 + ... + 108091781.

It is an arithmetic number, because the mean of its divisors is an integer number (620751600).

Almost surely, 2^89391561336 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 89391561336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158912409600).

89391561336 is an abundant number, since it is smaller than the sum of its proper divisors (228433257864).

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

89391561336 is a wasteful number, since it uses less digits than its factorization.

89391561336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1014 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The spelling of 89391561336 in words is "eighty-nine billion, three hundred ninety-one million, five hundred sixty-one thousand, three hundred thirty-six".