91303280812 has 12 divisors (see below), whose sum is σ = 163180332000. Its totient is φ = 44680328816.

The previous prime is 91303280701. The next prime is 91303280819. The reversal of 91303280812 is 21808230319.

It is not an unprimeable number, because it can be changed into a prime (91303280819) 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 3 ways as a sum of consecutive naturals, for example, 242827687 + ... + 242828062.

It is an arithmetic number, because the mean of its divisors is an integer number (13598361000).

Almost surely, 2^91303280812 is an apocalyptic number.

It is an amenable number.

91303280812 is a deficient number, since it is larger than the sum of its proper divisors (71877051188).

91303280812 is a wasteful number, since it uses less digits than its factorization.

91303280812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485655800 (or 485655798 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 91303280812 in words is "ninety-one billion, three hundred three million, two hundred eighty thousand, eight hundred twelve".