20888310274209 has 128 divisors (see below), whose sum is σ = 38156566625280. Its totient is φ = 11022724104192.

The previous prime is 20888310274157. The next prime is 20888310274241. The reversal of 20888310274209 is 90247201388802.

20888310274209 is a `hidden beast` number, since 2 + 0 + 88 + 83 + 10 + 274 + 209 = 666.

It is not a de Polignac number, because 20888310274209 - 2⁹ = 20888310273697 is a prime.

It is a super-2 number, since 2×20888310274209² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20888310274009) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 45037239 + ... + 45498675.

It is an arithmetic number, because the mean of its divisors is an integer number (298098176760).

Almost surely, 2^{20888310274209} is an apocalyptic number.

It is an amenable number.

20888310274209 is a deficient number, since it is larger than the sum of its proper divisors (17268256351071).

20888310274209 is a wasteful number, since it uses less digits than its factorization.

20888310274209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461736 (or 461730 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 20888310274209 in words is "twenty trillion, eight hundred eighty-eight billion, three hundred ten million, two hundred seventy-four thousand, two hundred nine".