91232303680 has 112 divisors (see below), whose sum is σ = 249322498560. Its totient is φ = 31148587008.

The previous prime is 91232303627. The next prime is 91232303693. The reversal of 91232303680 is 8630323219.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450154 + ... + 620566.

Almost surely, 2^91232303680 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 91232303680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124661249280).

91232303680 is an abundant number, since it is smaller than the sum of its proper divisors (158090194880).

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

91232303680 is a wasteful number, since it uses less digits than its factorization.

91232303680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170676 (or 170666 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

Adding to 91232303680 its reverse (8630323219), we get a palindrome (99862626899).

The spelling of 91232303680 in words is "ninety-one billion, two hundred thirty-two million, three hundred three thousand, six hundred eighty".