91353533632 has 112 divisors (see below), whose sum is σ = 187204161024. Its totient is φ = 44213760000.

The previous prime is 91353533629. The next prime is 91353533653. The reversal of 91353533632 is 23633535319.

It is a super-2 number, since 2×91353533632² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75311458 + ... + 75312670.

Almost surely, 2^91353533632 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 91353533632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93602080512).

91353533632 is an abundant number, since it is smaller than the sum of its proper divisors (95850627392).

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

91353533632 is a wasteful number, since it uses less digits than its factorization.

91353533632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578 (or 1568 counting only the distinct ones).

The product of its digits is 656100, while the sum is 43.

The spelling of 91353533632 in words is "ninety-one billion, three hundred fifty-three million, five hundred thirty-three thousand, six hundred thirty-two".