13245421551 has 8 divisors (see below), whose sum is σ = 17674594560. Its totient is φ = 8823264792.

The previous prime is 13245421381. The next prime is 13245421573. The reversal of 13245421551 is 15512454231.

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

It is not a de Polignac number, because 13245421551 - 2²⁶ = 13178312687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245421591) 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, 1749655 + ... + 1757208.

It is an arithmetic number, because the mean of its divisors is an integer number (2209324320).

Almost surely, 2^13245421551 is an apocalyptic number.

13245421551 is a deficient number, since it is larger than the sum of its proper divisors (4429173009).

13245421551 is a wasteful number, since it uses less digits than its factorization.

13245421551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508125.

The product of its digits is 24000, while the sum is 33.

Adding to 13245421551 its reverse (15512454231), we get a palindrome (28757875782).

The spelling of 13245421551 in words is "thirteen billion, two hundred forty-five million, four hundred twenty-one thousand, five hundred fifty-one".