91056808312 has 16 divisors (see below), whose sum is σ = 170742499200. Its totient is φ = 45525475200.

The previous prime is 91056808301. The next prime is 91056808313. The reversal of 91056808312 is 21380865019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91056808313) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 231064 + ... + 485287.

It is an arithmetic number, because the mean of its divisors is an integer number (10671406200).

Almost surely, 2^91056808312 is an apocalyptic number.

It is an amenable number.

91056808312 is a deficient number, since it is larger than the sum of its proper divisors (79685690888).

91056808312 is a wasteful number, since it uses less digits than its factorization.

91056808312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732246 (or 732242 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 91056808312 in words is "ninety-one billion, fifty-six million, eight hundred eight thousand, three hundred twelve".