20974161726 has 48 divisors (see below), whose sum is σ = 52044595200. Its totient is φ = 5980089744.

The previous prime is 20974161713. The next prime is 20974161739. The reversal of 20974161726 is 62716147902.

20974161726 is a `hidden beast` number, since 2 + 0 + 9 + 7 + 4 + 1 + 617 + 26 = 666.

It is an interprime number because it is at equal distance from previous prime (20974161713) and next prime (20974161739).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113406 + ... + 234113.

It is an arithmetic number, because the mean of its divisors is an integer number (1084262400).

Almost surely, 2^20974161726 is an apocalyptic number.

20974161726 is an abundant number, since it is smaller than the sum of its proper divisors (31070433474).

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

20974161726 is a wasteful number, since it uses less digits than its factorization.

20974161726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348013 (or 348010 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 20974161726 in words is "twenty billion, nine hundred seventy-four million, one hundred sixty-one thousand, seven hundred twenty-six".