20970126169 has 16 divisors (see below), whose sum is σ = 22266953280. Its totient is φ = 19692953280.

The previous prime is 20970126167. The next prime is 20970126223. The reversal of 20970126169 is 96162107902.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20970126169 - 2¹ = 20970126167 is a prime.

It is a super-2 number, since 2×20970126169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20970126167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2517199 + ... + 2525515.

It is an arithmetic number, because the mean of its divisors is an integer number (1391684580).

Almost surely, 2^20970126169 is an apocalyptic number.

It is an amenable number.

20970126169 is a deficient number, since it is larger than the sum of its proper divisors (1296827111).

20970126169 is a wasteful number, since it uses less digits than its factorization.

20970126169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 20970126169 in words is "twenty billion, nine hundred seventy million, one hundred twenty-six thousand, one hundred sixty-nine".