20827022807 has 4 divisors (see below), whose sum is σ = 20828323296. Its totient is φ = 20825722320.

The previous prime is 20827022791. The next prime is 20827022819. The reversal of 20827022807 is 70822072802.

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 20827022807 - 2⁴ = 20827022791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20827022837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625919 + ... + 658352.

It is an arithmetic number, because the mean of its divisors is an integer number (5207080824).

Almost surely, 2^20827022807 is an apocalyptic number.

20827022807 is a deficient number, since it is larger than the sum of its proper divisors (1300489).

20827022807 is a wasteful number, since it uses less digits than its factorization.

20827022807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300488.

The product of its (nonzero) digits is 50176, while the sum is 38.

The spelling of 20827022807 in words is "twenty billion, eight hundred twenty-seven million, twenty-two thousand, eight hundred seven".