20956592785159 has 2 divisors, whose sum is σ = 20956592785160. Its totient is φ = 20956592785158.

The previous prime is 20956592785099. The next prime is 20956592785169. The reversal of 20956592785159 is 95158729565902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20956592785159 - 2¹⁵ = 20956592752391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20956592785091 and 20956592785100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20956592785169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10478296392579 + 10478296392580.

It is an arithmetic number, because the mean of its divisors is an integer number (10478296392580).

Almost surely, 2^{20956592785159} is an apocalyptic number.

20956592785159 is a deficient number, since it is larger than the sum of its proper divisors (1).

20956592785159 is an equidigital number, since it uses as much as digits as its factorization.

20956592785159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360000, while the sum is 73.

The spelling of 20956592785159 in words is "twenty trillion, nine hundred fifty-six billion, five hundred ninety-two million, seven hundred eighty-five thousand, one hundred fifty-nine".