20834986756 has 12 divisors (see below), whose sum is σ = 36471104460. Its totient is φ = 10414671200.

The previous prime is 20834986709. The next prime is 20834986763. The reversal of 20834986756 is 65768943802.

It can be written as a sum of positive squares in 2 ways, for example, as 5067161856 + 15767824900 = 71184^2 + 125570^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20834986756.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688891 + ... + 718498.

It is an arithmetic number, because the mean of its divisors is an integer number (3039258705).

Almost surely, 2^20834986756 is an apocalyptic number.

It is an amenable number.

20834986756 is a deficient number, since it is larger than the sum of its proper divisors (15636117704).

20834986756 is a wasteful number, since it uses less digits than its factorization.

20834986756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411094 (or 1411092 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 20834986756 in words is "twenty billion, eight hundred thirty-four million, nine hundred eighty-six thousand, seven hundred fifty-six".