23193688646 has 4 divisors (see below), whose sum is σ = 34790532972. Its totient is φ = 11596844322.

The previous prime is 23193688571. The next prime is 23193688649. The reversal of 23193688646 is 64688639132.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 23193688591 and 23193688600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23193688649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5798422160 + ... + 5798422163.

It is an arithmetic number, because the mean of its divisors is an integer number (8697633243).

Almost surely, 2^23193688646 is an apocalyptic number.

23193688646 is a deficient number, since it is larger than the sum of its proper divisors (11596844326).

23193688646 is a wasteful number, since it uses less digits than its factorization.

23193688646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11596844325.

The product of its digits is 8957952, while the sum is 56.

The spelling of 23193688646 in words is "twenty-three billion, one hundred ninety-three million, six hundred eighty-eight thousand, six hundred forty-six".