21067860359824 has 80 divisors (see below), whose sum is σ = 44058002964480. Its totient is φ = 9730878157440.

The previous prime is 21067860359809. The next prime is 21067860359867. The reversal of 21067860359824 is 42895306876012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3659637 + ... + 7451755.

It is an arithmetic number, because the mean of its divisors is an integer number (550725037056).

It is a 3-persistent number, because k⋅21067860359824 is pandigital for 1 ≤ k ≤ 3, but not for k = 4.

Almost surely, 2^{21067860359824} 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 21067860359824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22029001482240).

21067860359824 is an abundant number, since it is smaller than the sum of its proper divisors (22990142604656).

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

21067860359824 is a wasteful number, since it uses less digits than its factorization.

21067860359824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3792668 (or 3792662 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 21067860359824 in words is "twenty-one trillion, sixty-seven billion, eight hundred sixty million, three hundred fifty-nine thousand, eight hundred twenty-four".