13125556803 has 12 divisors (see below), whose sum is σ = 18125029208. Its totient is φ = 8448632640.

The previous prime is 13125556799. The next prime is 13125556817. The reversal of 13125556803 is 30865552131.

It is not a de Polignac number, because 13125556803 - 2² = 13125556799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13125556603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2598658 + ... + 2603703.

Almost surely, 2^13125556803 is an apocalyptic number.

13125556803 is a deficient number, since it is larger than the sum of its proper divisors (4999472405).

13125556803 is an equidigital number, since it uses as much as digits as its factorization.

13125556803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5202422 (or 5202393 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 13125556803 in words is "thirteen billion, one hundred twenty-five million, five hundred fifty-six thousand, eight hundred three".