18678135695 has 16 divisors (see below), whose sum is σ = 22496717568. Its totient is φ = 14887272960.

The previous prime is 18678135683. The next prime is 18678135701. The reversal of 18678135695 is 59653187681.

It is a happy number.

It is not a de Polignac number, because 18678135695 - 2¹⁴ = 18678119311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2930402 + ... + 2936768.

It is an arithmetic number, because the mean of its divisors is an integer number (1406044848).

Almost surely, 2^18678135695 is an apocalyptic number.

18678135695 is a deficient number, since it is larger than the sum of its proper divisors (3818581873).

18678135695 is a wasteful number, since it uses less digits than its factorization.

18678135695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450.

The product of its digits is 10886400, while the sum is 59.

The spelling of 18678135695 in words is "eighteen billion, six hundred seventy-eight million, one hundred thirty-five thousand, six hundred ninety-five".