21260143360 has 36 divisors (see below), whose sum is σ = 50924690208. Its totient is φ = 8504056832.

The previous prime is 21260143343. The next prime is 21260143417. The reversal of 21260143360 is 6334106212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8303464 + ... + 8306023.

It is an arithmetic number, because the mean of its divisors is an integer number (1414574728).

Almost surely, 2^21260143360 is an apocalyptic number.

21260143360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21260143360 is an abundant number, since it is smaller than the sum of its proper divisors (29664546848).

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

21260143360 is an equidigital number, since it uses as much as digits as its factorization.

21260143360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16609508 (or 16609494 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 21260143360 its reverse (6334106212), we get a palindrome (27594249572).

The spelling of 21260143360 in words is "twenty-one billion, two hundred sixty million, one hundred forty-three thousand, three hundred sixty".