91347074208 has 216 divisors, whose sum is σ = 282868857180. Its totient is φ = 27948810240.

The previous prime is 91347074149. The next prime is 91347074213. The reversal of 91347074208 is 80247074319.

91347074208 is a `hidden beast` number, since 91 + 3 + 470 + 74 + 20 + 8 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 4338593424 + 87008480784 = 65868^2 + 294972^2 .

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 35 ways as a sum of consecutive naturals, for example, 8804448 + ... + 8814816.

Almost surely, 2^91347074208 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 91347074208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141434428590).

91347074208 is an abundant number, since it is smaller than the sum of its proper divisors (191521782972).

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

91347074208 is a wasteful number, since it uses less digits than its factorization.

91347074208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10592 (or 10568 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 91347074208 in words is "ninety-one billion, three hundred forty-seven million, seventy-four thousand, two hundred eight".