18660224258 has 16 divisors (see below), whose sum is σ = 31115809536. Its totient is φ = 8334591120.

The previous prime is 18660224251. The next prime is 18660224263. The reversal of 18660224258 is 85242206681.

It is not an unprimeable number, because it can be changed into a prime (18660224251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11575016 + ... + 11576627.

It is an arithmetic number, because the mean of its divisors is an integer number (1944738096).

Almost surely, 2^18660224258 is an apocalyptic number.

18660224258 is a deficient number, since it is larger than the sum of its proper divisors (12455585278).

18660224258 is a wasteful number, since it uses less digits than its factorization.

18660224258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23151689.

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 18660224258 in words is "eighteen billion, six hundred sixty million, two hundred twenty-four thousand, two hundred fifty-eight".