23981593646 has 8 divisors (see below), whose sum is σ = 35998107600. Its totient is φ = 11982224448.

The previous prime is 23981593627. The next prime is 23981593667. The reversal of 23981593646 is 64639518932.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 23981593591 and 23981593600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4282691 + ... + 4288286.

It is an arithmetic number, because the mean of its divisors is an integer number (4499763450).

Almost surely, 2^23981593646 is an apocalyptic number.

23981593646 is a deficient number, since it is larger than the sum of its proper divisors (12016513954).

23981593646 is a wasteful number, since it uses less digits than its factorization.

23981593646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8572378.

The product of its digits is 8398080, while the sum is 56.

The spelling of 23981593646 in words is "twenty-three billion, nine hundred eighty-one million, five hundred ninety-three thousand, six hundred forty-six".