21216260541160 has 64 divisors (see below), whose sum is σ = 50426597073600. Its totient is φ = 8011436668416.

The previous prime is 21216260541143. The next prime is 21216260541193. The reversal of 21216260541160 is 6114506261212.

It is a super-2 number, since 2×21216260541160² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49106709 + ... + 49536868.

It is an arithmetic number, because the mean of its divisors is an integer number (787915579275).

Almost surely, 2^{21216260541160} is an apocalyptic number.

21216260541160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21216260541160 is an abundant number, since it is smaller than the sum of its proper divisors (29210336532440).

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

21216260541160 is a wasteful number, since it uses less digits than its factorization.

21216260541160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98643890 (or 98643886 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 21216260541160 in words is "twenty-one trillion, two hundred sixteen billion, two hundred sixty million, five hundred forty-one thousand, one hundred sixty".