18520414081167 has 4 divisors (see below), whose sum is σ = 24693885441560. Its totient is φ = 12346942720776.

The previous prime is 18520414081111. The next prime is 18520414081171. The reversal of 18520414081167 is 76118041402581.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 18520414081167 - 2¹⁸ = 18520413819023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18520414081567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3086735680192 + ... + 3086735680197.

It is an arithmetic number, because the mean of its divisors is an integer number (6173471360390).

Almost surely, 2^{18520414081167} is an apocalyptic number.

18520414081167 is a deficient number, since it is larger than the sum of its proper divisors (6173471360393).

18520414081167 is an equidigital number, since it uses as much as digits as its factorization.

18520414081167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173471360392.

The product of its (nonzero) digits is 430080, while the sum is 48.

The spelling of 18520414081167 in words is "eighteen trillion, five hundred twenty billion, four hundred fourteen million, eighty-one thousand, one hundred sixty-seven".