12366042657 has 4 divisors (see below), whose sum is σ = 16488056880. Its totient is φ = 8244028436.

The previous prime is 12366042629. The next prime is 12366042673. The reversal of 12366042657 is 75624066321.

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 an emirpimes, since its reverse is a distinct semiprime: 75624066321 = 3 ⋅25208022107.

It is a cyclic number.

It is not a de Polignac number, because 12366042657 - 2¹⁶ = 12365977121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12366046657) 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, 2061007107 + ... + 2061007112.

It is an arithmetic number, because the mean of its divisors is an integer number (4122014220).

Almost surely, 2^12366042657 is an apocalyptic number.

It is an amenable number.

12366042657 is a deficient number, since it is larger than the sum of its proper divisors (4122014223).

12366042657 is an equidigital number, since it uses as much as digits as its factorization.

12366042657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122014222.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 12366042657 in words is "twelve billion, three hundred sixty-six million, forty-two thousand, six hundred fifty-seven".