91226424905 has 32 divisors (see below), whose sum is σ = 136508537088. Its totient is φ = 56858284800.

The previous prime is 91226424889. The next prime is 91226424907. The reversal of 91226424905 is 50942462219.

It is not a de Polignac number, because 91226424905 - 2⁴ = 91226424889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91226424907) 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 31 ways as a sum of consecutive naturals, for example, 2546699 + ... + 2582271.

It is an arithmetic number, because the mean of its divisors is an integer number (4265891784).

Almost surely, 2^91226424905 is an apocalyptic number.

It is an amenable number.

91226424905 is a deficient number, since it is larger than the sum of its proper divisors (45282112183).

91226424905 is a wasteful number, since it uses less digits than its factorization.

91226424905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42257.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 91226424905 in words is "ninety-one billion, two hundred twenty-six million, four hundred twenty-four thousand, nine hundred five".