20616304896 has 288 divisors, whose sum is σ = 66826045440. Its totient is φ = 6217574400.

The previous prime is 20616304867. The next prime is 20616304903. The reversal of 20616304896 is 69840361602.

20616304896 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 630 + 4 + 8 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19995901 + ... + 19996931.

It is an arithmetic number, because the mean of its divisors is an integer number (232034880).

Almost surely, 2^20616304896 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 20616304896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33413022720).

20616304896 is an abundant number, since it is smaller than the sum of its proper divisors (46209740544).

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

20616304896 is a wasteful number, since it uses less digits than its factorization.

20616304896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 20616304896 in words is "twenty billion, six hundred sixteen million, three hundred four thousand, eight hundred ninety-six".