13135303638278 has 32 divisors (see below), whose sum is σ = 20867559448320. Its totient is φ = 6188014594080.

The previous prime is 13135303638277. The next prime is 13135303638307. The reversal of 13135303638278 is 87283630353131.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135303638271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64802648 + ... + 65005028.

It is an arithmetic number, because the mean of its divisors is an integer number (652111232760).

Almost surely, 2^{13135303638278} is an apocalyptic number.

13135303638278 is a deficient number, since it is larger than the sum of its proper divisors (7732255810042).

13135303638278 is a wasteful number, since it uses less digits than its factorization.

13135303638278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223532.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 13135303638278 in words is "thirteen trillion, one hundred thirty-five billion, three hundred three million, six hundred thirty-eight thousand, two hundred seventy-eight".