20348808667 has 4 divisors (see below), whose sum is σ = 22198700376. Its totient is φ = 18498916960.

The previous prime is 20348808661. The next prime is 20348808757. The reversal of 20348808667 is 76680884302.

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 20348808667 - 2¹¹ = 20348806619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20348808661) 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, 924945838 + ... + 924945859.

It is an arithmetic number, because the mean of its divisors is an integer number (5549675094).

Almost surely, 2^20348808667 is an apocalyptic number.

20348808667 is a deficient number, since it is larger than the sum of its proper divisors (1849891709).

20348808667 is a wasteful number, since it uses less digits than its factorization.

20348808667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849891708.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 20348808667 in words is "twenty billion, three hundred forty-eight million, eight hundred eight thousand, six hundred sixty-seven".