21356147247132 has 24 divisors (see below), whose sum is σ = 50091905590272. Its totient is φ = 7081444985200.

The previous prime is 21356147247119. The next prime is 21356147247187. The reversal of 21356147247132 is 23174274165312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4658843094 + ... + 4658847677.

It is an arithmetic number, because the mean of its divisors is an integer number (2087162732928).

Almost surely, 2^{21356147247132} is an apocalyptic number.

It is an amenable number.

21356147247132 is an abundant number, since it is smaller than the sum of its proper divisors (28735758343140).

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

21356147247132 is a wasteful number, since it uses less digits than its factorization.

21356147247132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9317690969 (or 9317690967 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The spelling of 21356147247132 in words is "twenty-one trillion, three hundred fifty-six billion, one hundred forty-seven million, two hundred forty-seven thousand, one hundred thirty-two".