42147663091 has 2 divisors, whose sum is σ = 42147663092. Its totient is φ = 42147663090.

The previous prime is 42147663037. The next prime is 42147663113. The reversal of 42147663091 is 19036674124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42147663091 - 2²³ = 42139274483 is a prime.

It is not a weakly prime, because it can be changed into another prime (42147663011) 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 as a sum of consecutive naturals, namely, 21073831545 + 21073831546.

It is an arithmetic number, because the mean of its divisors is an integer number (21073831546).

Almost surely, 2^42147663091 is an apocalyptic number.

42147663091 is a deficient number, since it is larger than the sum of its proper divisors (1).

42147663091 is an equidigital number, since it uses as much as digits as its factorization.

42147663091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 42147663091 in words is "forty-two billion, one hundred forty-seven million, six hundred sixty-three thousand, ninety-one".