13135244427 has 24 divisors (see below), whose sum is σ = 19829759040. Its totient is φ = 8367690240.

The previous prime is 13135244393. The next prime is 13135244471. The reversal of 13135244427 is 72444253131.

It is not a de Polignac number, because 13135244427 - 2²² = 13131050123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13135244391 and 13135244400.

It is not an unprimeable number, because it can be changed into a prime (13135243427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234099 + ... + 284732.

It is an arithmetic number, because the mean of its divisors is an integer number (826239960).

Almost surely, 2^13135244427 is an apocalyptic number.

13135244427 is a deficient number, since it is larger than the sum of its proper divisors (6694514613).

13135244427 is a wasteful number, since it uses less digits than its factorization.

13135244427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518963 (or 518960 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

Adding to 13135244427 its reverse (72444253131), we get a palindrome (85579497558).

The spelling of 13135244427 in words is "thirteen billion, one hundred thirty-five million, two hundred forty-four thousand, four hundred twenty-seven".