13403728503 has 32 divisors (see below), whose sum is σ = 21743251200. Its totient is φ = 8093224800.

The previous prime is 13403728493. The next prime is 13403728549. The reversal of 13403728503 is 30582730431.

13403728503 is a `hidden beast` number, since 1 + 340 + 37 + 285 + 0 + 3 = 666.

It is not a de Polignac number, because 13403728503 - 2¹⁶ = 13403662967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13403728103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3993 + ... + 163778.

It is an arithmetic number, because the mean of its divisors is an integer number (679476600).

Almost surely, 2^13403728503 is an apocalyptic number.

13403728503 is a deficient number, since it is larger than the sum of its proper divisors (8339522697).

13403728503 is a wasteful number, since it uses less digits than its factorization.

13403728503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168060 (or 168054 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 13403728503 in words is "thirteen billion, four hundred three million, seven hundred twenty-eight thousand, five hundred three".