21582160261752 has 32 divisors (see below), whose sum is σ = 55413654728400. Its totient is φ = 6999619544064.

The previous prime is 21582160261687. The next prime is 21582160261799. The reversal of 21582160261752 is 25716206128512.

It is a super-3 number, since 3×21582160261752³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12152116377 + ... + 12152118152.

Almost surely, 2^{21582160261752} is an apocalyptic number.

It is an amenable number.

21582160261752 is an abundant number, since it is smaller than the sum of its proper divisors (33831494466648).

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

21582160261752 is a wasteful number, since it uses less digits than its factorization.

21582160261752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24304234575 (or 24304234571 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 21582160261752 in words is "twenty-one trillion, five hundred eighty-two billion, one hundred sixty million, two hundred sixty-one thousand, seven hundred fifty-two".