21446079255552 has 528 divisors, whose sum is σ = 70913239750080. Its totient is φ = 5725428645888.

The previous prime is 21446079255551. The next prime is 21446079255611. The reversal of 21446079255552 is 25555297064412.

It is a junction number, because it is equal to n+sod(n) for n = 21446079255492 and 21446079255501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21446079255551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 355667518 + ... + 355727810.

Almost surely, 2^{21446079255552} 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 21446079255552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35456619875040).

21446079255552 is an abundant number, since it is smaller than the sum of its proper divisors (49467160494528).

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

21446079255552 is a wasteful number, since it uses less digits than its factorization.

21446079255552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60486 (or 60461 counting only the distinct ones).

The product of its (nonzero) digits is 30240000, while the sum is 57.

The spelling of 21446079255552 in words is "twenty-one trillion, four hundred forty-six billion, seventy-nine million, two hundred fifty-five thousand, five hundred fifty-two".