13118478478 has 16 divisors (see below), whose sum is σ = 22505876064. Its totient is φ = 5617941120.

The previous prime is 13118478473. The next prime is 13118478479. The reversal of 13118478478 is 87487481131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13118478473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336175 + ... + 373162.

It is an arithmetic number, because the mean of its divisors is an integer number (1406617254).

Almost surely, 2^13118478478 is an apocalyptic number.

13118478478 is a deficient number, since it is larger than the sum of its proper divisors (9387397586).

13118478478 is a wasteful number, since it uses less digits than its factorization.

13118478478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710667.

The product of its digits is 1204224, while the sum is 52.

The spelling of 13118478478 in words is "thirteen billion, one hundred eighteen million, four hundred seventy-eight thousand, four hundred seventy-eight".