20017016667 has 12 divisors (see below), whose sum is σ = 30435230280. Its totient is φ = 12642326208.

The previous prime is 20017016651. The next prime is 20017016683. The reversal of 20017016667 is 76661071002.

It is an interprime number because it is at equal distance from previous prime (20017016651) and next prime (20017016683).

It is not a de Polignac number, because 20017016667 - 2⁴ = 20017016651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20017016647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58529118 + ... + 58529459.

It is an arithmetic number, because the mean of its divisors is an integer number (2536269190).

Almost surely, 2^20017016667 is an apocalyptic number.

20017016667 is a deficient number, since it is larger than the sum of its proper divisors (10418213613).

20017016667 is a wasteful number, since it uses less digits than its factorization.

20017016667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117058602 (or 117058599 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

Adding to 20017016667 its reverse (76661071002), we get a palindrome (96678087669).

The spelling of 20017016667 in words is "twenty billion, seventeen million, sixteen thousand, six hundred sixty-seven".