21058886912580 has 672 divisors, whose sum is σ = 72852601651200. Its totient is φ = 5068645320960.

The previous prime is 21058886912533. The next prime is 21058886912597. The reversal of 21058886912580 is 8521968885012.

21058886912580 is a `hidden beast` number, since 21 + 0 + 588 + 8 + 6 + 9 + 1 + 25 + 8 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 21423078769 + ... + 21423079751.

It is an arithmetic number, because the mean of its divisors is an integer number (108411609600).

Almost surely, 2^{21058886912580} is an apocalyptic number.

21058886912580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21058886912580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36426300825600).

21058886912580 is an abundant number, since it is smaller than the sum of its proper divisors (51793714738620).

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

21058886912580 is a wasteful number, since it uses less digits than its factorization.

21058886912580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843 (or 1826 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 63.

The spelling of 21058886912580 in words is "twenty-one trillion, fifty-eight billion, eight hundred eighty-six million, nine hundred twelve thousand, five hundred eighty".