21600027707 has 2 divisors, whose sum is σ = 21600027708. Its totient is φ = 21600027706.

The previous prime is 21600027677. The next prime is 21600027719. The reversal of 21600027707 is 70772000612.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21600027707 - 2⁶ = 21600027643 is a prime.

It is a super-2 number, since 2×21600027707² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21600027607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10800013853 + 10800013854.

It is an arithmetic number, because the mean of its divisors is an integer number (10800013854).

Almost surely, 2^21600027707 is an apocalyptic number.

21600027707 is a deficient number, since it is larger than the sum of its proper divisors (1).

21600027707 is an equidigital number, since it uses as much as digits as its factorization.

21600027707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 32.

The spelling of 21600027707 in words is "twenty-one billion, six hundred million, twenty-seven thousand, seven hundred seven".