18103022066 has 4 divisors (see below), whose sum is σ = 27154533102. Its totient is φ = 9051511032.

The previous prime is 18103022057. The next prime is 18103022099. The reversal of 18103022066 is 66022030181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18071156041 + 31866025 = 134429^2 + 5645^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4525755515 + ... + 4525755518.

Almost surely, 2^18103022066 is an apocalyptic number.

18103022066 is a deficient number, since it is larger than the sum of its proper divisors (9051511036).

18103022066 is an equidigital number, since it uses as much as digits as its factorization.

18103022066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9051511035.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 18103022066 in words is "eighteen billion, one hundred three million, twenty-two thousand, sixty-six".