18016117426 has 16 divisors (see below), whose sum is σ = 27135057024. Its totient is φ = 8971152784.

The previous prime is 18016117381. The next prime is 18016117463. The reversal of 18016117426 is 62471161081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686421 + ... + 712183.

It is an arithmetic number, because the mean of its divisors is an integer number (1695941064).

Almost surely, 2^18016117426 is an apocalyptic number.

18016117426 is a deficient number, since it is larger than the sum of its proper divisors (9118939598).

18016117426 is a wasteful number, since it uses less digits than its factorization.

18016117426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27185.

The product of its (nonzero) digits is 16128, while the sum is 37.

The spelling of 18016117426 in words is "eighteen billion, sixteen million, one hundred seventeen thousand, four hundred twenty-six".