21600371713 has 2 divisors, whose sum is σ = 21600371714. Its totient is φ = 21600371712.

The previous prime is 21600371701. The next prime is 21600371743. The reversal of 21600371713 is 31717300612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20003010624 + 1597361089 = 141432^2 + 39967^2 .

It is a cyclic number.

It is not a de Polignac number, because 21600371713 - 2²¹ = 21598274561 is a prime.

It is not a weakly prime, because it can be changed into another prime (21600371743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10800185856 + 10800185857.

It is an arithmetic number, because the mean of its divisors is an integer number (10800185857).

Almost surely, 2^21600371713 is an apocalyptic number.

It is an amenable number.

21600371713 is a deficient number, since it is larger than the sum of its proper divisors (1).

21600371713 is an equidigital number, since it uses as much as digits as its factorization.

21600371713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The spelling of 21600371713 in words is "twenty-one billion, six hundred million, three hundred seventy-one thousand, seven hundred thirteen".