13218398424 has 160 divisors (see below), whose sum is σ = 46159660800. Its totient is φ = 3433337280.

The previous prime is 13218398381. The next prime is 13218398429. The reversal of 13218398424 is 42489381231.

13218398424 is a `hidden beast` number, since 1 + 3 + 218 + 3 + 9 + 8 + 424 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 13218398424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13218398429) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 82564 + ... + 182355.

It is an arithmetic number, because the mean of its divisors is an integer number (288497880).

Almost surely, 2^13218398424 is an apocalyptic number.

13218398424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13218398424 is an abundant number, since it is smaller than the sum of its proper divisors (32941262376).

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

13218398424 is a wasteful number, since it uses less digits than its factorization.

13218398424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264955 (or 264942 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The spelling of 13218398424 in words is "thirteen billion, two hundred eighteen million, three hundred ninety-eight thousand, four hundred twenty-four".