405168220859 has 2 divisors, whose sum is σ = 405168220860. Its totient is φ = 405168220858.

The previous prime is 405168220729. The next prime is 405168220907. The reversal of 405168220859 is 958022861504.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405168220859 - 2⁸ = 405168220603 is a prime.

It is a super-2 number, since 2×405168220859² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (405168220459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202584110429 + 202584110430.

It is an arithmetic number, because the mean of its divisors is an integer number (202584110430).

Almost surely, 2^405168220859 is an apocalyptic number.

405168220859 is a deficient number, since it is larger than the sum of its proper divisors (1).

405168220859 is an equidigital number, since it uses as much as digits as its factorization.

405168220859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 405168220859 in words is "four hundred five billion, one hundred sixty-eight million, two hundred twenty thousand, eight hundred fifty-nine".