91889266368 has 112 divisors (see below), whose sum is σ = 251785709280. Its totient is φ = 29540818944.

The previous prime is 91889266367. The next prime is 91889266411. The reversal of 91889266368 is 86366298819.

It is a super-2 number, since 2×91889266368² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91889266299 and 91889266308.

It is not an unprimeable number, because it can be changed into a prime (91889266361) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5297646 + ... + 5314962.

It is an arithmetic number, because the mean of its divisors is an integer number (2248086690).

Almost surely, 2^91889266368 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 91889266368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125892854640).

91889266368 is an abundant number, since it is smaller than the sum of its proper divisors (159896442912).

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

91889266368 is a wasteful number, since it uses less digits than its factorization.

91889266368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18314 (or 18304 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 66.

The spelling of 91889266368 in words is "ninety-one billion, eight hundred eighty-nine million, two hundred sixty-six thousand, three hundred sixty-eight".