12405657423 has 8 divisors (see below), whose sum is σ = 16925548288. Its totient is φ = 8078102424.

The previous prime is 12405657419. The next prime is 12405657457. The reversal of 12405657423 is 32475650421.

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

It is not a de Polignac number, because 12405657423 - 2² = 12405657419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405657923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48083815 + ... + 48084072.

It is an arithmetic number, because the mean of its divisors is an integer number (2115693536).

Almost surely, 2^12405657423 is an apocalyptic number.

12405657423 is a deficient number, since it is larger than the sum of its proper divisors (4519890865).

12405657423 is an equidigital number, since it uses as much as digits as its factorization.

12405657423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96167933.

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 12405657423 in words is "twelve billion, four hundred five million, six hundred fifty-seven thousand, four hundred twenty-three".