18071060117 has 4 divisors (see below), whose sum is σ = 19713883776. Its totient is φ = 16428236460.

The previous prime is 18071060069. The next prime is 18071060143. The reversal of 18071060117 is 71106017081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71106017081 = 11 ⋅6464183371.

It is a cyclic number.

It is not a de Polignac number, because 18071060117 - 2⁸ = 18071059861 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 (18071069117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821411813 + ... + 821411834.

It is an arithmetic number, because the mean of its divisors is an integer number (4928470944).

Almost surely, 2^18071060117 is an apocalyptic number.

It is an amenable number.

18071060117 is a deficient number, since it is larger than the sum of its proper divisors (1642823659).

18071060117 is a wasteful number, since it uses less digits than its factorization.

18071060117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642823658.

The product of its (nonzero) digits is 2352, while the sum is 32.

Adding to 18071060117 its reverse (71106017081), we get a palindrome (89177077198).

The spelling of 18071060117 in words is "eighteen billion, seventy-one million, sixty thousand, one hundred seventeen".