13261363251 has 8 divisors (see below), whose sum is σ = 18159704784. Its totient is φ = 8601965280.

The previous prime is 13261363243. The next prime is 13261363307. The reversal of 13261363251 is 15236316231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13261363251 - 2³ = 13261363243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13261363201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59735760 + ... + 59735981.

It is an arithmetic number, because the mean of its divisors is an integer number (2269963098).

Almost surely, 2^13261363251 is an apocalyptic number.

13261363251 is a deficient number, since it is larger than the sum of its proper divisors (4898341533).

13261363251 is a wasteful number, since it uses less digits than its factorization.

13261363251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119471781.

The product of its digits is 19440, while the sum is 33.

Adding to 13261363251 its reverse (15236316231), we get a palindrome (28497679482).

The spelling of 13261363251 in words is "thirteen billion, two hundred sixty-one million, three hundred sixty-three thousand, two hundred fifty-one".