180085406690 has 64 divisors (see below), whose sum is σ = 388087372800. Its totient is φ = 58859813376.

The previous prime is 180085406687. The next prime is 180085406779. The reversal of 180085406690 is 96604580081.

It is a super-2 number, since 2×180085406690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401099 + ... + 721838.

It is an arithmetic number, because the mean of its divisors is an integer number (6063865200).

Almost surely, 2^180085406690 is an apocalyptic number.

180085406690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180085406690 is an abundant number, since it is smaller than the sum of its proper divisors (208001966110).

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

180085406690 is a wasteful number, since it uses less digits than its factorization.

180085406690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123059.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 180085406690 in words is "one hundred eighty billion, eighty-five million, four hundred six thousand, six hundred ninety".