18555409348074 has 40 divisors (see below), whose sum is σ = 41598787351968. Its totient is φ = 6182023540680.

The previous prime is 18555409348033. The next prime is 18555409348079. The reversal of 18555409348074 is 47084390455581.

It is a happy number.

18555409348074 is a `hidden beast` number, since 1 + 8 + 5 + 5 + 540 + 9 + 3 + 4 + 80 + 7 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (18555409348079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28500342 + ... + 29144129.

Almost surely, 2^{18555409348074} is an apocalyptic number.

18555409348074 is an abundant number, since it is smaller than the sum of its proper divisors (23043378003894).

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

18555409348074 is a wasteful number, since it uses less digits than its factorization.

18555409348074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57646472 (or 57646463 counting only the distinct ones).

The product of its (nonzero) digits is 96768000, while the sum is 63.

The spelling of 18555409348074 in words is "eighteen trillion, five hundred fifty-five billion, four hundred nine million, three hundred forty-eight thousand, seventy-four".