21477314271276 has 144 divisors (see below), whose sum is σ = 56132371346688. Its totient is φ = 6916899225600.

The previous prime is 21477314271241. The next prime is 21477314271317. The reversal of 21477314271276 is 67217241377412.

21477314271276 is a `hidden beast` number, since 2 + 1 + 4 + 77 + 31 + 4 + 271 + 276 = 666.

It is a super-3 number, since 3×21477314271276³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 47 ways as a sum of consecutive naturals, for example, 2314111756 + ... + 2314121036.

It is an arithmetic number, because the mean of its divisors is an integer number (389808134352).

Almost surely, 2^{21477314271276} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21477314271276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28066185673344).

21477314271276 is an abundant number, since it is smaller than the sum of its proper divisors (34655057075412).

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

21477314271276 is a wasteful number, since it uses less digits than its factorization.

21477314271276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12472 (or 12467 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 54.

The spelling of 21477314271276 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred fourteen million, two hundred seventy-one thousand, two hundred seventy-six".