20846045668039 has 2 divisors, whose sum is σ = 20846045668040. Its totient is φ = 20846045668038.

The previous prime is 20846045668001. The next prime is 20846045668067. The reversal of 20846045668039 is 93086654064802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20846045668039 - 2⁹ = 20846045667527 is a prime.

It is a super-2 number, since 2×20846045668039² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20846045668079) 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, 10423022834019 + 10423022834020.

It is an arithmetic number, because the mean of its divisors is an integer number (10423022834020).

Almost surely, 2^{20846045668039} is an apocalyptic number.

20846045668039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20846045668039 is an equidigital number, since it uses as much as digits as its factorization.

20846045668039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59719680, while the sum is 61.

The spelling of 20846045668039 in words is "twenty trillion, eight hundred forty-six billion, forty-five million, six hundred sixty-eight thousand, thirty-nine".