20980149164 has 12 divisors (see below), whose sum is σ = 39539511984. Its totient is φ = 9683145744.

The previous prime is 20980149161. The next prime is 20980149271. The reversal of 20980149164 is 46194108902.

It is not an unprimeable number, because it can be changed into a prime (20980149161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 201732152 + ... + 201732255.

It is an arithmetic number, because the mean of its divisors is an integer number (3294959332).

Almost surely, 2^20980149164 is an apocalyptic number.

It is an amenable number.

20980149164 is a deficient number, since it is larger than the sum of its proper divisors (18559362820).

20980149164 is a wasteful number, since it uses less digits than its factorization.

20980149164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403464424 (or 403464422 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 20980149164 in words is "twenty billion, nine hundred eighty million, one hundred forty-nine thousand, one hundred sixty-four".