423158804491 has 4 divisors (see below), whose sum is σ = 433479750984. Its totient is φ = 412837858000.

The previous prime is 423158804459. The next prime is 423158804531. The reversal of 423158804491 is 194408851324.

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 423158804491 - 2⁵ = 423158804459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423158804191) 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 in 3 ways as a sum of consecutive naturals, for example, 5160473185 + ... + 5160473266.

It is an arithmetic number, because the mean of its divisors is an integer number (108369937746).

Almost surely, 2^423158804491 is an apocalyptic number.

423158804491 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

423158804491 is a deficient number, since it is larger than the sum of its proper divisors (10320946493).

423158804491 is a wasteful number, since it uses less digits than its factorization.

423158804491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320946492.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 423158804491 in words is "four hundred twenty-three billion, one hundred fifty-eight million, eight hundred four thousand, four hundred ninety-one".