23744404209257 has 4 divisors (see below), whose sum is σ = 23744414625360. Its totient is φ = 23744393793156.

The previous prime is 23744404209241. The next prime is 23744404209277. The reversal of 23744404209257 is 75290240444732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23744404209257 - 2⁴ = 23744404209241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23744404209199 and 23744404209208.

It is not an unprimeable number, because it can be changed into a prime (23744404209277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153443 + ... + 6892920.

It is an arithmetic number, because the mean of its divisors is an integer number (5936103656340).

Almost surely, 2^{23744404209257} is an apocalyptic number.

It is an amenable number.

23744404209257 is a deficient number, since it is larger than the sum of its proper divisors (10416103).

23744404209257 is an equidigital number, since it uses as much as digits as its factorization.

23744404209257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10416102.

The product of its (nonzero) digits is 13547520, while the sum is 53.

The spelling of 23744404209257 in words is "twenty-three trillion, seven hundred forty-four billion, four hundred four million, two hundred nine thousand, two hundred fifty-seven".