18478105766 has 16 divisors (see below), whose sum is σ = 29350609200. Its totient is φ = 8694681600.

The previous prime is 18478105753. The next prime is 18478105831. The reversal of 18478105766 is 66750187481.

It is a congruent number.

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, 401510 + ... + 445158.

It is an arithmetic number, because the mean of its divisors is an integer number (1834413075).

Almost surely, 2^18478105766 is an apocalyptic number.

18478105766 is a deficient number, since it is larger than the sum of its proper divisors (10872503434).

18478105766 is a wasteful number, since it uses less digits than its factorization.

18478105766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56119.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 18478105766 in words is "eighteen billion, four hundred seventy-eight million, one hundred five thousand, seven hundred sixty-six".