42166000091 has 2 divisors, whose sum is σ = 42166000092. Its totient is φ = 42166000090.

The previous prime is 42166000057. The next prime is 42166000111. The reversal of 42166000091 is 19000066124.

42166000091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42166000091 - 2²² = 42161805787 is a prime.

It is not a weakly prime, because it can be changed into another prime (42162000091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21083000045 + 21083000046.

It is an arithmetic number, because the mean of its divisors is an integer number (21083000046).

Almost surely, 2^42166000091 is an apocalyptic number.

42166000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

42166000091 is an equidigital number, since it uses as much as digits as its factorization.

42166000091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 42166000091 in words is "forty-two billion, one hundred sixty-six million, ninety-one", and thus it is an aban number.