23591638426 has 4 divisors (see below), whose sum is σ = 35387457642. Its totient is φ = 11795819212.

The previous prime is 23591638403. The next prime is 23591638459. The reversal of 23591638426 is 62483619532.

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

It can be written as a sum of positive squares in only one way, i.e., 16349458225 + 7242180201 = 127865^2 + 85101^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 23591638426.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5897909605 + ... + 5897909608.

Almost surely, 2^23591638426 is an apocalyptic number.

23591638426 is a deficient number, since it is larger than the sum of its proper divisors (11795819216).

23591638426 is a wasteful number, since it uses less digits than its factorization.

23591638426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11795819215.

The product of its digits is 1866240, while the sum is 49.

The spelling of 23591638426 in words is "twenty-three billion, five hundred ninety-one million, six hundred thirty-eight thousand, four hundred twenty-six".