20026556169 has 8 divisors (see below), whose sum is σ = 27040076160. Its totient is φ = 13182036816.

The previous prime is 20026556117. The next prime is 20026556183. The reversal of 20026556169 is 96165562002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20026556169 - 2²¹ = 20024459017 is a prime.

It is a super-2 number, since 2×20026556169² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20026556169.

It is not an unprimeable number, because it can be changed into a prime (20026556369) 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 7 ways as a sum of consecutive naturals, for example, 42249882 + ... + 42250355.

It is an arithmetic number, because the mean of its divisors is an integer number (3380009520).

Almost surely, 2^20026556169 is an apocalyptic number.

It is an amenable number.

20026556169 is a deficient number, since it is larger than the sum of its proper divisors (7013519991).

20026556169 is an equidigital number, since it uses as much as digits as its factorization.

20026556169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84500319.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 20026556169 in words is "twenty billion, twenty-six million, five hundred fifty-six thousand, one hundred sixty-nine".