180745572818 has 32 divisors (see below), whose sum is σ = 285606881280. Its totient is φ = 85621211280.

The previous prime is 180745572731. The next prime is 180745572851. The reversal of 180745572818 is 818275547081.

It is a happy number.

It is a super-2 number, since 2×180745572818² (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 15 ways as a sum of consecutive naturals, for example, 2723021 + ... + 2788607.

It is an arithmetic number, because the mean of its divisors is an integer number (8925215040).

Almost surely, 2^180745572818 is an apocalyptic number.

180745572818 is a deficient number, since it is larger than the sum of its proper divisors (104861308462).

180745572818 is a wasteful number, since it uses less digits than its factorization.

180745572818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66182.

The product of its (nonzero) digits is 5017600, while the sum is 56.

The spelling of 180745572818 in words is "one hundred eighty billion, seven hundred forty-five million, five hundred seventy-two thousand, eight hundred eighteen".