13203123545 has 16 divisors (see below), whose sum is σ = 16179229440. Its totient is φ = 10340332800.

The previous prime is 13203123533. The next prime is 13203123553. The reversal of 13203123545 is 54532130231.

It is a happy number.

It is not a de Polignac number, because 13203123545 - 2¹⁸ = 13202861401 is a prime.

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, 21761 + ... + 163950.

It is an arithmetic number, because the mean of its divisors is an integer number (1011201840).

Almost surely, 2^13203123545 is an apocalyptic number.

It is an amenable number.

13203123545 is a deficient number, since it is larger than the sum of its proper divisors (2976105895).

13203123545 is a wasteful number, since it uses less digits than its factorization.

13203123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186016.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 13203123545 its reverse (54532130231), we get a palindrome (67735253776).

The spelling of 13203123545 in words is "thirteen billion, two hundred three million, one hundred twenty-three thousand, five hundred forty-five".