13533440423 has 2 divisors, whose sum is σ = 13533440424. Its totient is φ = 13533440422.

The previous prime is 13533440407. The next prime is 13533440491. The reversal of 13533440423 is 32404433531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13533440423 - 2⁴ = 13533440407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13533440423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13533440923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6766720211 + 6766720212.

It is an arithmetic number, because the mean of its divisors is an integer number (6766720212).

Almost surely, 2^13533440423 is an apocalyptic number.

13533440423 is a deficient number, since it is larger than the sum of its proper divisors (1).

13533440423 is an equidigital number, since it uses as much as digits as its factorization.

13533440423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 13533440423 its reverse (32404433531), we get a palindrome (45937873954).

The spelling of 13533440423 in words is "thirteen billion, five hundred thirty-three million, four hundred forty thousand, four hundred twenty-three".