20900009076 has 24 divisors (see below), whose sum is σ = 48920534880. Its totient is φ = 6944691552.

The previous prime is 20900009017. The next prime is 20900009111. The reversal of 20900009076 is 67090000902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2743306 + ... + 2750913.

It is an arithmetic number, because the mean of its divisors is an integer number (2038355620).

Almost surely, 2^20900009076 is an apocalyptic number.

It is an amenable number.

20900009076 is an abundant number, since it is smaller than the sum of its proper divisors (28020525804).

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

20900009076 is a wasteful number, since it uses less digits than its factorization.

20900009076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494543 (or 5494541 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

Adding to 20900009076 its reverse (67090000902), we get a palindrome (87990009978).

The spelling of 20900009076 in words is "twenty billion, nine hundred million, nine thousand, seventy-six".