20970126168 has 64 divisors (see below), whose sum is σ = 54797783040. Its totient is φ = 6674747904.

The previous prime is 20970126167. The next prime is 20970126223. The reversal of 20970126168 is 86162107902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20970126167) 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 15 ways as a sum of consecutive naturals, for example, 295305 + ... + 359367.

It is an arithmetic number, because the mean of its divisors is an integer number (856215360).

Almost surely, 2^20970126168 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 20970126168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27398891520).

20970126168 is an abundant number, since it is smaller than the sum of its proper divisors (33827656872).

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

20970126168 is a wasteful number, since it uses less digits than its factorization.

20970126168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64688 (or 64684 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 20970126168 in words is "twenty billion, nine hundred seventy million, one hundred twenty-six thousand, one hundred sixty-eight".