1534221415423 has 2 divisors, whose sum is σ = 1534221415424. Its totient is φ = 1534221415422.

The previous prime is 1534221415411. The next prime is 1534221415471. The reversal of 1534221415423 is 3245141224351.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1534221415423 - 2²⁵ = 1534187860991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534221415723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767110707711 + 767110707712.

It is an arithmetic number, because the mean of its divisors is an integer number (767110707712).

Almost surely, 2^{1534221415423} is an apocalyptic number.

1534221415423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534221415423 is an equidigital number, since it uses as much as digits as its factorization.

1534221415423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 37.

Adding to 1534221415423 its reverse (3245141224351), we get a palindrome (4779362639774).

The spelling of 1534221415423 in words is "one trillion, five hundred thirty-four billion, two hundred twenty-one million, four hundred fifteen thousand, four hundred twenty-three".