12042317765 has 4 divisors (see below), whose sum is σ = 14450781324. Its totient is φ = 9633854208.

The previous prime is 12042317741. The next prime is 12042317767. The reversal of 12042317765 is 56771324021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56771324021 = 53 ⋅1071157057.

It can be written as a sum of positive squares in 2 ways, for example, as 3229989889 + 8812327876 = 56833^2 + 93874^2 .

It is a cyclic number.

It is not a de Polignac number, because 12042317765 - 2⁸ = 12042317509 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 (12042317767) 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, 1204231772 + ... + 1204231781.

It is an arithmetic number, because the mean of its divisors is an integer number (3612695331).

Almost surely, 2^12042317765 is an apocalyptic number.

It is an amenable number.

12042317765 is a deficient number, since it is larger than the sum of its proper divisors (2408463559).

12042317765 is an equidigital number, since it uses as much as digits as its factorization.

12042317765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408463558.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 12042317765 in words is "twelve billion, forty-two million, three hundred seventeen thousand, seven hundred sixty-five".