91693892322 has 90 divisors (see below), whose sum is σ = 211494272913. Its totient is φ = 29692309968.

The previous prime is 91693892309. The next prime is 91693892393. The reversal of 91693892322 is 22329839619.

It can be written as a sum of positive squares in 2 ways, for example, as 73978016121 + 17715876201 = 271989^2 + 133101^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=214119.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 142602933 + ... + 142603575.

Almost surely, 2^91693892322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91693892322

91693892322 is an abundant number, since it is smaller than the sum of its proper divisors (119800380591).

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

91693892322 is an frugal number, since it uses more digits than its factorization.

91693892322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374 (or 685 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The spelling of 91693892322 in words is "ninety-one billion, six hundred ninety-three million, eight hundred ninety-two thousand, three hundred twenty-two".