21281843145710 has 32 divisors (see below), whose sum is σ = 43780620994560. Its totient is φ = 7296493705632.

The previous prime is 21281843145653. The next prime is 21281843145809. The reversal of 21281843145710 is 1754134818212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876377 + ... + 6582683.

It is an arithmetic number, because the mean of its divisors is an integer number (1368144406080).

Almost surely, 2^{21281843145710} is an apocalyptic number.

21281843145710 is an abundant number, since it is smaller than the sum of its proper divisors (22498777848850).

21281843145710 is a wasteful number, since it uses less digits than its factorization.

21281843145710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759600.

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 21281843145710 in words is "twenty-one trillion, two hundred eighty-one billion, eight hundred forty-three million, one hundred forty-five thousand, seven hundred ten".