18126044215 has 16 divisors (see below), whose sum is σ = 23051927808. Its totient is φ = 13635288576.

The previous prime is 18126044177. The next prime is 18126044257. The reversal of 18126044215 is 51244062181.

It is a cyclic number.

It is not a de Polignac number, because 18126044215 - 2¹¹ = 18126042167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4647 + ... + 190456.

It is an arithmetic number, because the mean of its divisors is an integer number (1440745488).

Almost surely, 2^18126044215 is an apocalyptic number.

18126044215 is a deficient number, since it is larger than the sum of its proper divisors (4925883593).

18126044215 is a wasteful number, since it uses less digits than its factorization.

18126044215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196218.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 18126044215 in words is "eighteen billion, one hundred twenty-six million, forty-four thousand, two hundred fifteen".