18068486507 has 4 divisors (see below), whose sum is σ = 18069585600. Its totient is φ = 18067387416.

The previous prime is 18068486489. The next prime is 18068486521. The reversal of 18068486507 is 70568486081.

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

It is a cyclic number.

It is not a de Polignac number, because 18068486507 - 2²² = 18064292203 is a prime.

It is a super-2 number, since 2×18068486507² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18068488507) 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, 524507 + ... + 557892.

It is an arithmetic number, because the mean of its divisors is an integer number (4517396400).

Almost surely, 2^18068486507 is an apocalyptic number.

18068486507 is a deficient number, since it is larger than the sum of its proper divisors (1099093).

18068486507 is a wasteful number, since it uses less digits than its factorization.

18068486507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099092.

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 18068486507 in words is "eighteen billion, sixty-eight million, four hundred eighty-six thousand, five hundred seven".