18116487213 has 32 divisors (see below), whose sum is σ = 27828810240. Its totient is φ = 10367818560.

The previous prime is 18116487209. The next prime is 18116487229. The reversal of 18116487213 is 31278461181.

It is not a de Polignac number, because 18116487213 - 2² = 18116487209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18116482213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145431 + ... + 239547.

It is an arithmetic number, because the mean of its divisors is an integer number (869650320).

Almost surely, 2^18116487213 is an apocalyptic number.

It is an amenable number.

18116487213 is a deficient number, since it is larger than the sum of its proper divisors (9712323027).

18116487213 is a wasteful number, since it uses less digits than its factorization.

18116487213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94457.

The product of its digits is 64512, while the sum is 42.

The spelling of 18116487213 in words is "eighteen billion, one hundred sixteen million, four hundred eighty-seven thousand, two hundred thirteen".