91683425856 has 112 divisors (see below), whose sum is σ = 264745793088. Its totient is φ = 27770880000.

The previous prime is 91683425851. The next prime is 91683425927. The reversal of 91683425856 is 65852438619.

It is a junction number, because it is equal to n+sod(n) for n = 91683425796 and 91683425805.

It is not an unprimeable number, because it can be changed into a prime (91683425851) by changing a digit.

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, 5721856 + ... + 5737856.

It is an arithmetic number, because the mean of its divisors is an integer number (2363801724).

Almost surely, 2^91683425856 is an apocalyptic number.

91683425856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91683425856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132372896544).

91683425856 is an abundant number, since it is smaller than the sum of its proper divisors (173062367232).

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

91683425856 is a wasteful number, since it uses less digits than its factorization.

91683425856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18740 (or 18730 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 57.

The spelling of 91683425856 in words is "ninety-one billion, six hundred eighty-three million, four hundred twenty-five thousand, eight hundred fifty-six".