23353679138 has 4 divisors (see below), whose sum is σ = 35030518710. Its totient is φ = 11676839568.

The previous prime is 23353679137. The next prime is 23353679201. The reversal of 23353679138 is 83197635332.

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., 20501371489 + 2852307649 = 143183^2 + 53407^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23353679137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5838419783 + ... + 5838419786.

Almost surely, 2^23353679138 is an apocalyptic number.

23353679138 is a deficient number, since it is larger than the sum of its proper divisors (11676839572).

23353679138 is a wasteful number, since it uses less digits than its factorization.

23353679138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11676839571.

The product of its digits is 2449440, while the sum is 50.

The spelling of 23353679138 in words is "twenty-three billion, three hundred fifty-three million, six hundred seventy-nine thousand, one hundred thirty-eight".