180868630642 has 64 divisors (see below), whose sum is σ = 317708697600. Its totient is φ = 75629030400.

The previous prime is 180868630633. The next prime is 180868630673. The reversal of 180868630642 is 246036868081.

It is a self number, because there is not a number n which added to its sum of digits gives 180868630642.

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, 56679267 + ... + 56682457.

It is an arithmetic number, because the mean of its divisors is an integer number (4964198400).

Almost surely, 2^180868630642 is an apocalyptic number.

180868630642 is a deficient number, since it is larger than the sum of its proper divisors (136840066958).

180868630642 is a wasteful number, since it uses less digits than its factorization.

180868630642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847.

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 180868630642 in words is "one hundred eighty billion, eight hundred sixty-eight million, six hundred thirty thousand, six hundred forty-two".