21271176260 has 24 divisors (see below), whose sum is σ = 44761214400. Its totient is φ = 8490995424.

The previous prime is 21271176253. The next prime is 21271176301. The reversal of 21271176260 is 6267117212.

It is a self number, because there is not a number n which added to its sum of digits gives 21271176260.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1082210 + ... + 1101689.

It is an arithmetic number, because the mean of its divisors is an integer number (1865050600).

Almost surely, 2^21271176260 is an apocalyptic number.

21271176260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21271176260 is an abundant number, since it is smaller than the sum of its proper divisors (23490038140).

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

21271176260 is a wasteful number, since it uses less digits than its factorization.

21271176260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184395 (or 2184393 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 21271176260 in words is "twenty-one billion, two hundred seventy-one million, one hundred seventy-six thousand, two hundred sixty".