18005670077 has 16 divisors (see below), whose sum is σ = 18918457344. Its totient is φ = 17115462000.

The previous prime is 18005670049. The next prime is 18005670103. The reversal of 18005670077 is 77007650081.

It is a cyclic number.

It is not a de Polignac number, because 18005670077 - 2¹² = 18005665981 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18005670677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581378 + ... + 611564.

It is an arithmetic number, because the mean of its divisors is an integer number (1182403584).

Almost surely, 2^18005670077 is an apocalyptic number.

It is an amenable number.

18005670077 is a deficient number, since it is larger than the sum of its proper divisors (912787267).

18005670077 is a wasteful number, since it uses less digits than its factorization.

18005670077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30560.

The product of its (nonzero) digits is 82320, while the sum is 41.

The spelling of 18005670077 in words is "eighteen billion, five million, six hundred seventy thousand, seventy-seven".