13205213251 has 16 divisors (see below), whose sum is σ = 13898573568. Its totient is φ = 12528921600.

The previous prime is 13205213213. The next prime is 13205213257. The reversal of 13205213251 is 15231250231.

It is a cyclic number.

It is not a de Polignac number, because 13205213251 - 2⁹ = 13205212739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13205213257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3509211 + ... + 3512971.

It is an arithmetic number, because the mean of its divisors is an integer number (868660848).

Almost surely, 2^13205213251 is an apocalyptic number.

13205213251 is a deficient number, since it is larger than the sum of its proper divisors (693360317).

13205213251 is a wasteful number, since it uses less digits than its factorization.

13205213251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13205213251 its reverse (15231250231), we get a palindrome (28436463482).

The spelling of 13205213251 in words is "thirteen billion, two hundred five million, two hundred thirteen thousand, two hundred fifty-one".