18061211086 has 4 divisors (see below), whose sum is σ = 27091816632. Its totient is φ = 9030605542.

The previous prime is 18061210997. The next prime is 18061211101. The reversal of 18061211086 is 68011216081.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4515302770 + ... + 4515302773.

It is an arithmetic number, because the mean of its divisors is an integer number (6772954158).

Almost surely, 2^18061211086 is an apocalyptic number.

18061211086 is a deficient number, since it is larger than the sum of its proper divisors (9030605546).

18061211086 is an equidigital number, since it uses as much as digits as its factorization.

18061211086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9030605545.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 18061211086 in words is "eighteen billion, sixty-one million, two hundred eleven thousand, eighty-six".