13533423251 has 2 divisors, whose sum is σ = 13533423252. Its totient is φ = 13533423250.

The previous prime is 13533423187. The next prime is 13533423263. The reversal of 13533423251 is 15232433531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13533423251 - 2⁶ = 13533423187 is a prime.

It is not a weakly prime, because it can be changed into another prime (13533423751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6766711625 + 6766711626.

It is an arithmetic number, because the mean of its divisors is an integer number (6766711626).

Almost surely, 2^13533423251 is an apocalyptic number.

13533423251 is a deficient number, since it is larger than the sum of its proper divisors (1).

13533423251 is an equidigital number, since it uses as much as digits as its factorization.

13533423251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 32.

Adding to 13533423251 its reverse (15232433531), we get a palindrome (28765856782).

The spelling of 13533423251 in words is "thirteen billion, five hundred thirty-three million, four hundred twenty-three thousand, two hundred fifty-one".