20919076272 has 120 divisors (see below), whose sum is σ = 60910387200. Its totient is φ = 6694773120.

The previous prime is 20919076261. The next prime is 20919076313. The reversal of 20919076272 is 27267091902.

20919076272 is a `hidden beast` number, since 2 + 0 + 9 + 19 + 0 + 7 + 627 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 548479 + ... + 585377.

It is an arithmetic number, because the mean of its divisors is an integer number (507586560).

Almost surely, 2^20919076272 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 20919076272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30455193600).

20919076272 is an abundant number, since it is smaller than the sum of its proper divisors (39991310928).

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

20919076272 is a wasteful number, since it uses less digits than its factorization.

20919076272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37071 (or 37062 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 20919076272 in words is "twenty billion, nine hundred nineteen million, seventy-six thousand, two hundred seventy-two".