13218387782 has 8 divisors (see below), whose sum is σ = 20311181352. Its totient is φ = 6447994000.

The previous prime is 13218387773. The next prime is 13218387811. The reversal of 13218387782 is 28778381231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13218387782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80599844 + ... + 80600007.

It is an arithmetic number, because the mean of its divisors is an integer number (2538897669).

Almost surely, 2^13218387782 is an apocalyptic number.

13218387782 is a deficient number, since it is larger than the sum of its proper divisors (7092793570).

13218387782 is a wasteful number, since it uses less digits than its factorization.

13218387782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161199894.

The product of its digits is 903168, while the sum is 50.

The spelling of 13218387782 in words is "thirteen billion, two hundred eighteen million, three hundred eighty-seven thousand, seven hundred eighty-two".