20605667363 has 8 divisors (see below), whose sum is σ = 21551463936. Its totient is φ = 19664029000.

The previous prime is 20605667353. The next prime is 20605667387. The reversal of 20605667363 is 36376650602.

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 20605667363 - 2⁸ = 20605667107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20605667353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029413 + ... + 1049238.

It is an arithmetic number, because the mean of its divisors is an integer number (2693932992).

Almost surely, 2^20605667363 is an apocalyptic number.

20605667363 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20605667363 is a deficient number, since it is larger than the sum of its proper divisors (945796573).

20605667363 is a wasteful number, since it uses less digits than its factorization.

20605667363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079105.

The product of its (nonzero) digits is 816480, while the sum is 44.

The spelling of 20605667363 in words is "twenty billion, six hundred five million, six hundred sixty-seven thousand, three hundred sixty-three".