13818385173474 has 64 divisors (see below), whose sum is σ = 35098006682880. Its totient is φ = 3947694347520.

The previous prime is 13818385173473. The next prime is 13818385173503. The reversal of 13818385173474 is 47437158381831.

13818385173474 is a `hidden beast` number, since 1 + 3 + 8 + 1 + 83 + 8 + 517 + 34 + 7 + 4 = 666.

13818385173474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (13818385173473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1679152 + ... + 5518724.

It is an arithmetic number, because the mean of its divisors is an integer number (548406354420).

Almost surely, 2^{13818385173474} is an apocalyptic number.

13818385173474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13818385173474 is an abundant number, since it is smaller than the sum of its proper divisors (21279621509406).

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

13818385173474 is a wasteful number, since it uses less digits than its factorization.

13818385173474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849112 (or 3849106 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

The spelling of 13818385173474 in words is "thirteen trillion, eight hundred eighteen billion, three hundred eighty-five million, one hundred seventy-three thousand, four hundred seventy-four".