21641056231124 has 48 divisors (see below), whose sum is σ = 43418134326336. Its totient is φ = 9348402067200.

The previous prime is 21641056231117. The next prime is 21641056231129. The reversal of 21641056231124 is 42113265014612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21641056231129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154500137 + ... + 154640144.

It is an arithmetic number, because the mean of its divisors is an integer number (904544465132).

Almost surely, 2^{21641056231124} is an apocalyptic number.

It is an amenable number.

21641056231124 is an abundant number, since it is smaller than the sum of its proper divisors (21777078095212).

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

21641056231124 is a wasteful number, since it uses less digits than its factorization.

21641056231124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309140376 (or 309140374 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 21641056231124 in words is "twenty-one trillion, six hundred forty-one billion, fifty-six million, two hundred thirty-one thousand, one hundred twenty-four".