18010778824 has 32 divisors (see below), whose sum is σ = 34001241120. Its totient is φ = 8943993216.

The previous prime is 18010778801. The next prime is 18010778833. The reversal of 18010778824 is 42887701081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682092 + ... + 708004.

It is an arithmetic number, because the mean of its divisors is an integer number (1062538785).

Almost surely, 2^18010778824 is an apocalyptic number.

It is an amenable number.

18010778824 is a deficient number, since it is larger than the sum of its proper divisors (15990462296).

18010778824 is a wasteful number, since it uses less digits than its factorization.

18010778824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26509 (or 26505 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 46.

The spelling of 18010778824 in words is "eighteen billion, ten million, seven hundred seventy-eight thousand, eight hundred twenty-four".