19327493172223 has 4 divisors (see below), whose sum is σ = 19342844637480. Its totient is φ = 19312141706968.

The previous prime is 19327493172167. The next prime is 19327493172259. The reversal of 19327493172223 is 32227139472391.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19327493172223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19327493172263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7675730740 + ... + 7675733257.

It is an arithmetic number, because the mean of its divisors is an integer number (4835711159370).

Almost surely, 2^{19327493172223} is an apocalyptic number.

19327493172223 is a deficient number, since it is larger than the sum of its proper divisors (15351465257).

19327493172223 is a wasteful number, since it uses less digits than its factorization.

19327493172223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15351465256.

The product of its digits is 6858432, while the sum is 55.

The spelling of 19327493172223 in words is "nineteen trillion, three hundred twenty-seven billion, four hundred ninety-three million, one hundred seventy-two thousand, two hundred twenty-three".