21365035444712 has 16 divisors (see below), whose sum is σ = 40060297018500. Its totient is φ = 10682289573120.

The previous prime is 21365035444693. The next prime is 21365035444741. The reversal of 21365035444712 is 21744453056312.

It can be written as a sum of positive squares in 2 ways, for example, as 21295511466436 + 69523978276 = 4614706^2 + 263674^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28120337 + ... + 28870112.

Almost surely, 2^{21365035444712} is an apocalyptic number.

It is an amenable number.

21365035444712 is a deficient number, since it is larger than the sum of its proper divisors (18695261573788).

21365035444712 is a wasteful number, since it uses less digits than its factorization.

21365035444712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57037316 (or 57037312 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 47.

The spelling of 21365035444712 in words is "twenty-one trillion, three hundred sixty-five billion, thirty-five million, four hundred forty-four thousand, seven hundred twelve".