13243250551 has 4 divisors (see below), whose sum is σ = 13566256704. Its totient is φ = 12920244400.

The previous prime is 13243250539. The next prime is 13243250599. The reversal of 13243250551 is 15505234231.

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

It is a cyclic number.

It is not a de Polignac number, because 13243250551 - 2¹⁵ = 13243217783 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 (13243250521) 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, 161503015 + ... + 161503096.

It is an arithmetic number, because the mean of its divisors is an integer number (3391564176).

Almost surely, 2^13243250551 is an apocalyptic number.

13243250551 is a deficient number, since it is larger than the sum of its proper divisors (323006153).

13243250551 is an equidigital number, since it uses as much as digits as its factorization.

13243250551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323006152.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 13243250551 its reverse (15505234231), we get a palindrome (28748484782).

The spelling of 13243250551 in words is "thirteen billion, two hundred forty-three million, two hundred fifty thousand, five hundred fifty-one".