401226253216163 has 4 divisors (see below), whose sum is σ = 401778146274960. Its totient is φ = 400674360157368.

The previous prime is 401226253216121. The next prime is 401226253216177. The reversal of 401226253216163 is 361612352622104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401226253216163 - 2⁶ = 401226253216099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401226253216183) 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 in 3 ways as a sum of consecutive naturals, for example, 275946528308 + ... + 275946529761.

It is an arithmetic number, because the mean of its divisors is an integer number (100444536568740).

Almost surely, 2^{401226253216163} is an apocalyptic number.

401226253216163 is a deficient number, since it is larger than the sum of its proper divisors (551893058797).

401226253216163 is an equidigital number, since it uses as much as digits as its factorization.

401226253216163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551893058796.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 401226253216163 in words is "four hundred one trillion, two hundred twenty-six billion, two hundred fifty-three million, two hundred sixteen thousand, one hundred sixty-three".