40468917161 has 2 divisors, whose sum is σ = 40468917162. Its totient is φ = 40468917160.

The previous prime is 40468917149. The next prime is 40468917169. The reversal of 40468917161 is 16171986404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36494371225 + 3974545936 = 191035^2 + 63044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40468917161 is a prime.

It is not a weakly prime, because it can be changed into another prime (40468917169) 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, 20234458580 + 20234458581.

It is an arithmetic number, because the mean of its divisors is an integer number (20234458581).

Almost surely, 2^40468917161 is an apocalyptic number.

It is an amenable number.

40468917161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40468917161 is an equidigital number, since it uses as much as digits as its factorization.

40468917161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 40468917161 in words is "forty billion, four hundred sixty-eight million, nine hundred seventeen thousand, one hundred sixty-one".