40048168091 has 2 divisors, whose sum is σ = 40048168092. Its totient is φ = 40048168090.

The previous prime is 40048168079. The next prime is 40048168093. The reversal of 40048168091 is 19086184004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40048168091 is a prime.

Together with 40048168093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40048168093) 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, 20024084045 + 20024084046.

It is an arithmetic number, because the mean of its divisors is an integer number (20024084046).

Almost surely, 2^40048168091 is an apocalyptic number.

40048168091 is a deficient number, since it is larger than the sum of its proper divisors (1).

40048168091 is an equidigital number, since it uses as much as digits as its factorization.

40048168091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 40048168091 in words is "forty billion, forty-eight million, one hundred sixty-eight thousand, ninety-one".