91605046272 has 88 divisors (see below), whose sum is σ = 244687506336. Its totient is φ = 30469152768.

The previous prime is 91605046223. The next prime is 91605046289. The reversal of 91605046272 is 27264050619.

It is a super-2 number, since 2×91605046272² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402698 + ... + 1466550.

Almost surely, 2^91605046272 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 91605046272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122343753168).

91605046272 is an abundant number, since it is smaller than the sum of its proper divisors (153082460064).

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

91605046272 is a wasteful number, since it uses less digits than its factorization.

91605046272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64343 (or 64325 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 91605046272 in words is "ninety-one billion, six hundred five million, forty-six thousand, two hundred seventy-two".