20826784605277 has 16 divisors (see below), whose sum is σ = 25202421603072. Its totient is φ = 16801264961280.

The previous prime is 20826784605181. The next prime is 20826784605317. The reversal of 20826784605277 is 77250648762802.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20826784605277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20826784600277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11262627 + ... + 12980767.

It is an arithmetic number, because the mean of its divisors is an integer number (1575151350192).

Almost surely, 2^{20826784605277} is an apocalyptic number.

It is an amenable number.

20826784605277 is a deficient number, since it is larger than the sum of its proper divisors (4375636997795).

20826784605277 is a wasteful number, since it uses less digits than its factorization.

20826784605277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820028.

The product of its (nonzero) digits is 126443520, while the sum is 64.

The spelling of 20826784605277 in words is "twenty trillion, eight hundred twenty-six billion, seven hundred eighty-four million, six hundred five thousand, two hundred seventy-seven".