21860576496 has 240 divisors, whose sum is σ = 68387810400. Its totient is φ = 6462996480.

The previous prime is 21860576489. The next prime is 21860576501. The reversal of 21860576496 is 69467506812.

21860576496 is a `hidden beast` number, since 2 + 1 + 8 + 60 + 576 + 4 + 9 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11215330 + ... + 11217278.

It is an arithmetic number, because the mean of its divisors is an integer number (284949210).

Almost surely, 2^21860576496 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 21860576496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34193905200).

21860576496 is an abundant number, since it is smaller than the sum of its proper divisors (46527233904).

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

21860576496 is a wasteful number, since it uses less digits than its factorization.

21860576496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144 (or 2135 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 21860576496 in words is "twenty-one billion, eight hundred sixty million, five hundred seventy-six thousand, four hundred ninety-six".