12423569651 has 2 divisors, whose sum is σ = 12423569652. Its totient is φ = 12423569650.

The previous prime is 12423569603. The next prime is 12423569663. The reversal of 12423569651 is 15696532421.

It is a strong prime.

It is an emirp because it is prime and its reverse (15696532421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12423569651 is a prime.

It is not a weakly prime, because it can be changed into another prime (12423569681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211784825 + 6211784826.

It is an arithmetic number, because the mean of its divisors is an integer number (6211784826).

Almost surely, 2^12423569651 is an apocalyptic number.

12423569651 is a deficient number, since it is larger than the sum of its proper divisors (1).

12423569651 is an equidigital number, since it uses as much as digits as its factorization.

12423569651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 44.

The spelling of 12423569651 in words is "twelve billion, four hundred twenty-three million, five hundred sixty-nine thousand, six hundred fifty-one".