18818851041258 has 16 divisors (see below), whose sum is σ = 37638196729536. Its totient is φ = 6272867905920.

The previous prime is 18818851041253. The next prime is 18818851041259. The reversal of 18818851041258 is 85214015881881.

It is not an unprimeable number, because it can be changed into a prime (18818851041253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20114791 + ... + 21029562.

It is an arithmetic number, because the mean of its divisors is an integer number (2352387295596).

Almost surely, 2^{18818851041258} is an apocalyptic number.

18818851041258 is an abundant number, since it is smaller than the sum of its proper divisors (18819345688278).

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

18818851041258 is a wasteful number, since it uses less digits than its factorization.

18818851041258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41220589.

The product of its (nonzero) digits is 6553600, while the sum is 60.

The spelling of 18818851041258 in words is "eighteen trillion, eight hundred eighteen billion, eight hundred fifty-one million, forty-one thousand, two hundred fifty-eight".