13503134779 has 4 divisors (see below), whose sum is σ = 13503479776. Its totient is φ = 13502789784.

The previous prime is 13503134759. The next prime is 13503134789. The reversal of 13503134779 is 97743130531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13503134779 - 2¹⁷ = 13503003707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13503134759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104979 + ... + 195004.

It is an arithmetic number, because the mean of its divisors is an integer number (3375869944).

Almost surely, 2^13503134779 is an apocalyptic number.

13503134779 is a deficient number, since it is larger than the sum of its proper divisors (344997).

13503134779 is an equidigital number, since it uses as much as digits as its factorization.

13503134779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344996.

The product of its (nonzero) digits is 238140, while the sum is 43.

The spelling of 13503134779 in words is "thirteen billion, five hundred three million, one hundred thirty-four thousand, seven hundred seventy-nine".