91401170227 has 2 divisors, whose sum is σ = 91401170228. Its totient is φ = 91401170226.

The previous prime is 91401170219. The next prime is 91401170407. The reversal of 91401170227 is 72207110419.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91401170227 - 2³ = 91401170219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91401170192 and 91401170201.

It is not a weakly prime, because it can be changed into another prime (91401170027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45700585113 + 45700585114.

It is an arithmetic number, because the mean of its divisors is an integer number (45700585114).

Almost surely, 2^91401170227 is an apocalyptic number.

91401170227 is a deficient number, since it is larger than the sum of its proper divisors (1).

91401170227 is an equidigital number, since it uses as much as digits as its factorization.

91401170227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 91401170227 in words is "ninety-one billion, four hundred one million, one hundred seventy thousand, two hundred twenty-seven".