1523230405453 has 4 divisors (see below), whose sum is σ = 1523233250140. Its totient is φ = 1523227560768.

The previous prime is 1523230405427. The next prime is 1523230405511. The reversal of 1523230405453 is 3545040323251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1154341806409 + 368888599044 = 1074403^2 + 607362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1523230405453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523230435453) 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 in 3 ways as a sum of consecutive naturals, for example, 349308 + ... + 1780021.

It is an arithmetic number, because the mean of its divisors is an integer number (380808312535).

Almost surely, 2^{1523230405453} is an apocalyptic number.

It is an amenable number.

1523230405453 is a deficient number, since it is larger than the sum of its proper divisors (2844687).

1523230405453 is an equidigital number, since it uses as much as digits as its factorization.

1523230405453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844686.

The product of its (nonzero) digits is 216000, while the sum is 37.

The spelling of 1523230405453 in words is "one trillion, five hundred twenty-three billion, two hundred thirty million, four hundred five thousand, four hundred fifty-three".