12145637663 has 4 divisors (see below), whose sum is σ = 12146614128. Its totient is φ = 12144661200.

The previous prime is 12145637659. The next prime is 12145637683. The reversal of 12145637663 is 36673654121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36673654121 = 13 ⋅2821050317.

It is a cyclic number.

It is not a de Polignac number, because 12145637663 - 2² = 12145637659 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 (12145637683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469331 + ... + 494532.

It is an arithmetic number, because the mean of its divisors is an integer number (3036653532).

Almost surely, 2^12145637663 is an apocalyptic number.

12145637663 is a deficient number, since it is larger than the sum of its proper divisors (976465).

12145637663 is an equidigital number, since it uses as much as digits as its factorization.

12145637663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976464.

The product of its digits is 544320, while the sum is 44.

The spelling of 12145637663 in words is "twelve billion, one hundred forty-five million, six hundred thirty-seven thousand, six hundred sixty-three".