91930475011 has 2 divisors, whose sum is σ = 91930475012. Its totient is φ = 91930475010.

The previous prime is 91930475003. The next prime is 91930475029. The reversal of 91930475011 is 11057403919.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91930475011 - 2³ = 91930475003 is a prime.

It is not a weakly prime, because it can be changed into another prime (91930875011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45965237505 + 45965237506.

It is an arithmetic number, because the mean of its divisors is an integer number (45965237506).

Almost surely, 2^91930475011 is an apocalyptic number.

91930475011 is a deficient number, since it is larger than the sum of its proper divisors (1).

91930475011 is an equidigital number, since it uses as much as digits as its factorization.

91930475011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 91930475011 in words is "ninety-one billion, nine hundred thirty million, four hundred seventy-five thousand, eleven".