91463819328 has 224 divisors, whose sum is σ = 307776798720. Its totient is φ = 26091901440.

The previous prime is 91463819327. The next prime is 91463819333. The reversal of 91463819328 is 82391836419.

91463819328 is a `hidden beast` number, since 91 + 463 + 8 + 1 + 93 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (91463819327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8256033 + ... + 8267103.

Almost surely, 2^91463819328 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 91463819328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153888399360).

91463819328 is an abundant number, since it is smaller than the sum of its proper divisors (216312979392).

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

91463819328 is a wasteful number, since it uses less digits than its factorization.

91463819328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11782 (or 11766 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 91463819328 in words is "ninety-one billion, four hundred sixty-three million, eight hundred nineteen thousand, three hundred twenty-eight".