18116016651 has 12 divisors (see below), whose sum is σ = 26170369680. Its totient is φ = 12076056720.

The previous prime is 18116016643. The next prime is 18116016673. The reversal of 18116016651 is 15661061181.

It is not a de Polignac number, because 18116016651 - 2³ = 18116016643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18116016691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13935 + ... + 190856.

It is an arithmetic number, because the mean of its divisors is an integer number (2180864140).

Almost surely, 2^18116016651 is an apocalyptic number.

18116016651 is a deficient number, since it is larger than the sum of its proper divisors (8054353029).

18116016651 is a wasteful number, since it uses less digits than its factorization.

18116016651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214626 (or 214623 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The spelling of 18116016651 in words is "eighteen billion, one hundred sixteen million, sixteen thousand, six hundred fifty-one".