20850506797 has 12 divisors (see below), whose sum is σ = 21603531456. Its totient is φ = 20122902800.

The previous prime is 20850506791. The next prime is 20850506849. The reversal of 20850506797 is 79760505802.

It is not a de Polignac number, because 20850506797 - 2¹⁹ = 20849982509 is a prime.

It is a super-3 number, since 3×20850506797³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20850506797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850506791) 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 11 ways as a sum of consecutive naturals, for example, 2912172 + ... + 2919322.

It is an arithmetic number, because the mean of its divisors is an integer number (1800294288).

Almost surely, 2^20850506797 is an apocalyptic number.

It is an amenable number.

20850506797 is a deficient number, since it is larger than the sum of its proper divisors (753024659).

20850506797 is an equidigital number, since it uses as much as digits as its factorization.

20850506797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10676 (or 10647 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 20850506797 in words is "twenty billion, eight hundred fifty million, five hundred six thousand, seven hundred ninety-seven".