12641365123 has 2 divisors, whose sum is σ = 12641365124. Its totient is φ = 12641365122.

The previous prime is 12641365117. The next prime is 12641365141. The reversal of 12641365123 is 32156314621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12641365123 is a prime.

It is a super-2 number, since 2×12641365123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12641365153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320682561 + 6320682562.

It is an arithmetic number, because the mean of its divisors is an integer number (6320682562).

Almost surely, 2^12641365123 is an apocalyptic number.

12641365123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641365123 is an equidigital number, since it uses as much as digits as its factorization.

12641365123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

Adding to 12641365123 its reverse (32156314621), we get a palindrome (44797679744).

The spelling of 12641365123 in words is "twelve billion, six hundred forty-one million, three hundred sixty-five thousand, one hundred twenty-three".