91482563640 has 1024 divisors, whose sum is σ = 339771801600. Its totient is φ = 19508428800.

The previous prime is 91482563633. The next prime is 91482563651. The reversal of 91482563640 is 4636528419.

It is the 22-nd Catalan number.

It is a self number, because there is not a number n which added to its sum of digits gives 91482563640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2127501459 + ... + 2127501501.

It is an arithmetic number, because the mean of its divisors is an integer number (331808400).

Almost surely, 2^91482563640 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 91482563640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169885900800).

91482563640 is an abundant number, since it is smaller than the sum of its proper divisors (248289237960).

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

91482563640 is a wasteful number, since it uses less digits than its factorization.

91482563640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 91482563640 in words is "ninety-one billion, four hundred eighty-two million, five hundred sixty-three thousand, six hundred forty".