91905694848 has 896 divisors, whose sum is σ = 332317468800. Its totient is φ = 24962826240.

The previous prime is 91905694841. The next prime is 91905694861. The reversal of 91905694848 is 84849650919.

91905694848 is a `hidden beast` number, since 9 + 1 + 90 + 5 + 69 + 484 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (91905694841) 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 111 ways as a sum of consecutive naturals, for example, 401334798 + ... + 401335026.

Almost surely, 2^91905694848 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 91905694848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166158734400).

91905694848 is an abundant number, since it is smaller than the sum of its proper divisors (240411773952).

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

91905694848 is a wasteful number, since it uses less digits than its factorization.

91905694848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 91905694848 in words is "ninety-one billion, nine hundred five million, six hundred ninety-four thousand, eight hundred forty-eight".