13318972485 has 48 divisors (see below), whose sum is σ = 26696509056. Its totient is φ = 5620309632.

The previous prime is 13318972427. The next prime is 13318972487. The reversal of 13318972485 is 58427981331.

It is not a de Polignac number, because 13318972485 - 2¹⁹ = 13318448197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13318972487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 687409 + ... + 706518.

It is an arithmetic number, because the mean of its divisors is an integer number (556177272).

Almost surely, 2^13318972485 is an apocalyptic number.

13318972485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13318972485 is an abundant number, since it is smaller than the sum of its proper divisors (13377536571).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13318972485 is a wasteful number, since it uses less digits than its factorization.

13318972485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393962 (or 1393955 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The spelling of 13318972485 in words is "thirteen billion, three hundred eighteen million, nine hundred seventy-two thousand, four hundred eighty-five".