421173151165 has 16 divisors (see below), whose sum is σ = 576302087088. Its totient is φ = 292724868096.

The previous prime is 421173151159. The next prime is 421173151171. The reversal of 421173151165 is 561151371124.

It is an interprime number because it is at equal distance from previous prime (421173151159) and next prime (421173151171).

It can be written as a sum of positive squares in 8 ways, for example, as 10206252676 + 410966898489 = 101026^2 + 641067^2 .

It is not a de Polignac number, because 421173151165 - 2⁹ = 421173150653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190574982 + ... + 190577191.

It is an arithmetic number, because the mean of its divisors is an integer number (36018880443).

Almost surely, 2^421173151165 is an apocalyptic number.

It is an amenable number.

421173151165 is a deficient number, since it is larger than the sum of its proper divisors (155128935923).

421173151165 is a wasteful number, since it uses less digits than its factorization.

421173151165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381152208.

The product of its digits is 25200, while the sum is 37.

The spelling of 421173151165 in words is "four hundred twenty-one billion, one hundred seventy-three million, one hundred fifty-one thousand, one hundred sixty-five".