12402523501 has 2 divisors, whose sum is σ = 12402523502. Its totient is φ = 12402523500.

The previous prime is 12402523489. The next prime is 12402523547. The reversal of 12402523501 is 10532520421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6863294025 + 5539229476 = 82845^2 + 74426^2 .

It is an emirp because it is prime and its reverse (10532520421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12402523501 - 2¹⁵ = 12402490733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12402523571) 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 as a sum of consecutive naturals, namely, 6201261750 + 6201261751.

It is an arithmetic number, because the mean of its divisors is an integer number (6201261751).

Almost surely, 2^12402523501 is an apocalyptic number.

It is an amenable number.

12402523501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402523501 is an equidigital number, since it uses as much as digits as its factorization.

12402523501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 12402523501 in words is "twelve billion, four hundred two million, five hundred twenty-three thousand, five hundred one".