22473643391 has 4 divisors (see below), whose sum is σ = 23795622432. Its totient is φ = 21151664352.

The previous prime is 22473643303. The next prime is 22473643393. The reversal of 22473643391 is 19334637422.

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 22473643391 - 2¹⁸ = 22473381247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22473643393) 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, 660989495 + ... + 660989528.

It is an arithmetic number, because the mean of its divisors is an integer number (5948905608).

Almost surely, 2^22473643391 is an apocalyptic number.

22473643391 is a deficient number, since it is larger than the sum of its proper divisors (1321979041).

22473643391 is a wasteful number, since it uses less digits than its factorization.

22473643391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321979040.

The product of its digits is 653184, while the sum is 44.

The spelling of 22473643391 in words is "twenty-two billion, four hundred seventy-three million, six hundred forty-three thousand, three hundred ninety-one".