19223242422491 has 4 divisors (see below), whose sum is σ = 19231812751272. Its totient is φ = 19214672093712.

The previous prime is 19223242422487. The next prime is 19223242422563. The reversal of 19223242422491 is 19422424232291.

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 19223242422491 - 2² = 19223242422487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19223242422421) 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, 4285161026 + ... + 4285165511.

It is an arithmetic number, because the mean of its divisors is an integer number (4807953187818).

Almost surely, 2^{19223242422491} is an apocalyptic number.

19223242422491 is a deficient number, since it is larger than the sum of its proper divisors (8570328781).

19223242422491 is an equidigital number, since it uses as much as digits as its factorization.

19223242422491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570328780.

The product of its digits is 995328, while the sum is 47.

The spelling of 19223242422491 in words is "nineteen trillion, two hundred twenty-three billion, two hundred forty-two million, four hundred twenty-two thousand, four hundred ninety-one".