12263231640645 has 12 divisors (see below), whose sum is σ = 21256268177196. Its totient is φ = 6540390208320.

The previous prime is 12263231640587. The next prime is 12263231640679. The reversal of 12263231640645 is 54604613236221.

12263231640645 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 3 + 231 + 6 + 406 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4313301768801 + 7949929871844 = 2076849^2 + 2819562^2 .

It is not a de Polignac number, because 12263231640645 - 2²³ = 12263223252037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 272516258681 = 12263231640645 / (1 + 2 + 2 + 6 + 3 + 2 + 3 + 1 + 6 + 4 + 0 + 6 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 12263231640645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136258129296 + ... + 136258129385.

It is an arithmetic number, because the mean of its divisors is an integer number (1771355681433).

Almost surely, 2^{12263231640645} is an apocalyptic number.

12263231640645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12263231640645 is a deficient number, since it is larger than the sum of its proper divisors (8993036536551).

12263231640645 is a wasteful number, since it uses less digits than its factorization.

12263231640645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272516258692 (or 272516258689 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

Adding to 12263231640645 its reverse (54604613236221), we get a palindrome (66867844876866).

The spelling of 12263231640645 in words is "twelve trillion, two hundred sixty-three billion, two hundred thirty-one million, six hundred forty thousand, six hundred forty-five".