18077320067 has 12 divisors (see below), whose sum is σ = 18864314928. Its totient is φ = 17320878000.

The previous prime is 18077320061. The next prime is 18077320069. The reversal of 18077320067 is 76002377081.

It is not a de Polignac number, because 18077320067 - 2⁸ = 18077319811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18077320061) 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, 3938 + ... + 190184.

It is an arithmetic number, because the mean of its divisors is an integer number (1572026244).

Almost surely, 2^18077320067 is an apocalyptic number.

18077320067 is a deficient number, since it is larger than the sum of its proper divisors (786994861).

18077320067 is a wasteful number, since it uses less digits than its factorization.

18077320067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186410 (or 186379 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 18077320067 in words is "eighteen billion, seventy-seven million, three hundred twenty thousand, sixty-seven".