23985404457 has 16 divisors (see below), whose sum is σ = 36666719232. Its totient is φ = 13661871120.

The previous prime is 23985404449. The next prime is 23985404473. The reversal of 23985404457 is 75440458932.

It is not a de Polignac number, because 23985404457 - 2³ = 23985404449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23985404407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1829743 + ... + 1842804.

It is an arithmetic number, because the mean of its divisors is an integer number (2291669952).

Almost surely, 2^23985404457 is an apocalyptic number.

It is an amenable number.

23985404457 is a deficient number, since it is larger than the sum of its proper divisors (12681314775).

23985404457 is a wasteful number, since it uses less digits than its factorization.

23985404457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672868.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 23985404457 in words is "twenty-three billion, nine hundred eighty-five million, four hundred four thousand, four hundred fifty-seven".