18605010505 has 8 divisors (see below), whose sum is σ = 22327379712. Its totient is φ = 14883097008.

The previous prime is 18605010503. The next prime is 18605010559. The reversal of 18605010505 is 50501050681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18605010505 - 2¹ = 18605010503 is a prime.

It is a super-2 number, since 2×18605010505² (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 (18605010503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16537 + ... + 193606.

It is an arithmetic number, because the mean of its divisors is an integer number (2790922464).

Almost surely, 2^18605010505 is an apocalyptic number.

It is an amenable number.

18605010505 is a deficient number, since it is larger than the sum of its proper divisors (3722369207).

18605010505 is a wasteful number, since it uses less digits than its factorization.

18605010505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227855.

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 18605010505 in words is "eighteen billion, six hundred five million, ten thousand, five hundred five".