12012537815423 has 2 divisors, whose sum is σ = 12012537815424. Its totient is φ = 12012537815422.

The previous prime is 12012537815407. The next prime is 12012537815479. The reversal of 12012537815423 is 32451873521021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12012537815423 - 2⁴ = 12012537815407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012537815123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006268907711 + 6006268907712.

It is an arithmetic number, because the mean of its divisors is an integer number (6006268907712).

Almost surely, 2^{12012537815423} is an apocalyptic number.

12012537815423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012537815423 is an equidigital number, since it uses as much as digits as its factorization.

12012537815423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 12012537815423 in words is "twelve trillion, twelve billion, five hundred thirty-seven million, eight hundred fifteen thousand, four hundred twenty-three".