21896976852576 has 576 divisors, whose sum is σ = 75398966415360. Its totient is φ = 6163757752320.

The previous prime is 21896976852557. The next prime is 21896976852661. The reversal of 21896976852576 is 67525867969812.

21896976852576 is a `hidden beast` number, since 2 + 1 + 89 + 6 + 9 + 7 + 6 + 8 + 525 + 7 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21896976852495 and 21896976852504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 915758061 + ... + 915781971.

It is an arithmetic number, because the mean of its divisors is an integer number (130900983360).

Almost surely, 2^{21896976852576} 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 21896976852576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37699483207680).

21896976852576 is an abundant number, since it is smaller than the sum of its proper divisors (53501989562784).

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

21896976852576 is a wasteful number, since it uses less digits than its factorization.

21896976852576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24264 (or 24243 counting only the distinct ones).

The product of its digits is 5486745600, while the sum is 81.

The spelling of 21896976852576 in words is "twenty-one trillion, eight hundred ninety-six billion, nine hundred seventy-six million, eight hundred fifty-two thousand, five hundred seventy-six".