20802088807 has 2 divisors, whose sum is σ = 20802088808. Its totient is φ = 20802088806.

The previous prime is 20802088799. The next prime is 20802088823. The reversal of 20802088807 is 70888020802.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20802088807 - 2³ = 20802088799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20802088907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10401044403 + 10401044404.

It is an arithmetic number, because the mean of its divisors is an integer number (10401044404).

Almost surely, 2^20802088807 is an apocalyptic number.

20802088807 is a deficient number, since it is larger than the sum of its proper divisors (1).

20802088807 is an equidigital number, since it uses as much as digits as its factorization.

20802088807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 114688, while the sum is 43.

The spelling of 20802088807 in words is "twenty billion, eight hundred two million, eighty-eight thousand, eight hundred seven".