13245421505 has 16 divisors (see below), whose sum is σ = 16328331264. Its totient is φ = 10307269440.

The previous prime is 13245421381. The next prime is 13245421573. The reversal of 13245421505 is 50512454231.

It is a de Polignac number, because none of the positive numbers 2^k-13245421505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 998144 + ... + 1011326.

It is an arithmetic number, because the mean of its divisors is an integer number (1020520704).

Almost surely, 2^13245421505 is an apocalyptic number.

It is an amenable number.

13245421505 is a deficient number, since it is larger than the sum of its proper divisors (3082909759).

13245421505 is a wasteful number, since it uses less digits than its factorization.

13245421505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18656.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 13245421505 its reverse (50512454231), we get a palindrome (63757875736).

The spelling of 13245421505 in words is "thirteen billion, two hundred forty-five million, four hundred twenty-one thousand, five hundred five".