18151011799 has 4 divisors (see below), whose sum is σ = 18311640336. Its totient is φ = 17990383264.

The previous prime is 18151011793. The next prime is 18151011803. The reversal of 18151011799 is 99711015181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18151011799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18151011793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80314099 + ... + 80314324.

It is an arithmetic number, because the mean of its divisors is an integer number (4577910084).

Almost surely, 2^18151011799 is an apocalyptic number.

18151011799 is a deficient number, since it is larger than the sum of its proper divisors (160628537).

18151011799 is a wasteful number, since it uses less digits than its factorization.

18151011799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160628536.

The product of its (nonzero) digits is 22680, while the sum is 43.

The spelling of 18151011799 in words is "eighteen billion, one hundred fifty-one million, eleven thousand, seven hundred ninety-nine".