91338894531072 has 240 divisors, whose sum is σ = 273458021316480. Its totient is φ = 29327704473600.

The previous prime is 91338894531061. The next prime is 91338894531089. The reversal of 91338894531072 is 27013549883319.

91338894531072 is a `hidden beast` number, since 9 + 1 + 3 + 3 + 8 + 8 + 94 + 531 + 0 + 7 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11865447 + ... + 17985177.

It is an arithmetic number, because the mean of its divisors is an integer number (1139408422152).

Almost surely, 2^{91338894531072} 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 91338894531072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136729010658240).

91338894531072 is an abundant number, since it is smaller than the sum of its proper divisors (182119126785408).

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

91338894531072 is a wasteful number, since it uses less digits than its factorization.

91338894531072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119875 (or 6119856 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 91338894531072 in words is "ninety-one trillion, three hundred thirty-eight billion, eight hundred ninety-four million, five hundred thirty-one thousand, seventy-two".