20869998626928 has 160 divisors (see below), whose sum is σ = 60408875584512. Its totient is φ = 6152927616000.

The previous prime is 20869998626909. The next prime is 20869998626963. The reversal of 20869998626928 is 82962689996802.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 494259225 + ... + 494301447.

Almost surely, 2^{20869998626928} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20869998626928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30204437792256).

20869998626928 is an abundant number, since it is smaller than the sum of its proper divisors (39538876957584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20869998626928 is a wasteful number, since it uses less digits than its factorization.

20869998626928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67583 (or 67577 counting only the distinct ones).

The product of its (nonzero) digits is 5804752896, while the sum is 84.

The spelling of 20869998626928 in words is "twenty trillion, eight hundred sixty-nine billion, nine hundred ninety-eight million, six hundred twenty-six thousand, nine hundred twenty-eight".