80442102181 has 8 divisors (see below), whose sum is σ = 91939679424. Its totient is φ = 68945987040.

The previous prime is 80442102179. The next prime is 80442102193. The reversal of 80442102181 is 18120124408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80442102181 - 2¹ = 80442102179 is a prime.

It is a super-4 number, since 4×80442102181⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80442102161) 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, 244975 + ... + 469996.

It is an arithmetic number, because the mean of its divisors is an integer number (11492459928).

Almost surely, 2^80442102181 is an apocalyptic number.

It is an amenable number.

80442102181 is a deficient number, since it is larger than the sum of its proper divisors (11497577243).

80442102181 is a wasteful number, since it uses less digits than its factorization.

80442102181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731051.

The product of its (nonzero) digits is 4096, while the sum is 31.

Adding to 80442102181 its reverse (18120124408), we get a palindrome (98562226589).

The spelling of 80442102181 in words is "eighty billion, four hundred forty-two million, one hundred two thousand, one hundred eighty-one".