20829099086271 has 48 divisors (see below), whose sum is σ = 34714063448064. Its totient is φ = 11788819987392.

The previous prime is 20829099086269. The next prime is 20829099086317. The reversal of 20829099086271 is 17268099092802.

It is a happy number.

It is not a de Polignac number, because 20829099086271 - 2¹ = 20829099086269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 20829099086199 and 20829099086208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20829099086251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 995301 + ... + 6530606.

It is an arithmetic number, because the mean of its divisors is an integer number (723209655168).

Almost surely, 2^{20829099086271} is an apocalyptic number.

20829099086271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20829099086271 is a deficient number, since it is larger than the sum of its proper divisors (13884964361793).

20829099086271 is a wasteful number, since it uses less digits than its factorization.

20829099086271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7526340 (or 7526337 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 20829099086271 in words is "twenty trillion, eight hundred twenty-nine billion, ninety-nine million, eighty-six thousand, two hundred seventy-one".