21411085180 has 48 divisors (see below), whose sum is σ = 47996444160. Its totient is φ = 7999387200.

The previous prime is 21411085153. The next prime is 21411085187. The reversal of 21411085180 is 8158011412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411085187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369816 + ... + 423775.

It is an arithmetic number, because the mean of its divisors is an integer number (999925920).

Almost surely, 2^21411085180 is an apocalyptic number.

21411085180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21411085180 is an abundant number, since it is smaller than the sum of its proper divisors (26585358980).

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

21411085180 is a wasteful number, since it uses less digits than its factorization.

21411085180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793690 (or 793688 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 31.

Adding to 21411085180 its reverse (8158011412), we get a palindrome (29569096592).

The spelling of 21411085180 in words is "twenty-one billion, four hundred eleven million, eighty-five thousand, one hundred eighty".