21481739271132 has 288 divisors, whose sum is σ = 59907456000000. Its totient is φ = 5971914127872.

The previous prime is 21481739271023. The next prime is 21481739271143. The reversal of 21481739271132 is 23117293718412.

It is a happy number.

It is a super-2 number, since 2×21481739271132² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1145744494 + ... + 1145763242.

It is an arithmetic number, because the mean of its divisors is an integer number (208012000000).

Almost surely, 2^{21481739271132} 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 21481739271132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29953728000000).

21481739271132 is an abundant number, since it is smaller than the sum of its proper divisors (38425716728868).

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

21481739271132 is a wasteful number, since it uses less digits than its factorization.

21481739271132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19193 (or 19184 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The spelling of 21481739271132 in words is "twenty-one trillion, four hundred eighty-one billion, seven hundred thirty-nine million, two hundred seventy-one thousand, one hundred thirty-two".