18126846216 has 24 divisors (see below), whose sum is σ = 49093542030. Its totient is φ = 6042282048.

The previous prime is 18126846211. The next prime is 18126846223. The reversal of 18126846216 is 61264862181.

It is a happy number.

18126846216 is a `hidden beast` number, since 1 + 8 + 12 + 6 + 8 + 4 + 621 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9072562500 + 9054283716 = 95250^2 + 95154^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (18126846211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125880805 + ... + 125880948.

Almost surely, 2^18126846216 is an apocalyptic number.

It is an amenable number.

18126846216 is an abundant number, since it is smaller than the sum of its proper divisors (30966695814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18126846216 is a wasteful number, since it uses less digits than its factorization.

18126846216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251761765 (or 251761758 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The spelling of 18126846216 in words is "eighteen billion, one hundred twenty-six million, eight hundred forty-six thousand, two hundred sixteen".