5606705200721 has 2 divisors, whose sum is σ = 5606705200722. Its totient is φ = 5606705200720.

The previous prime is 5606705200703. The next prime is 5606705200753. The reversal of 5606705200721 is 1270025076065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4708418272321 + 898286928400 = 2169889^2 + 947780^2 .

It is a cyclic number.

It is not a de Polignac number, because 5606705200721 - 2³⁸ = 5331827293777 is a prime.

It is not a weakly prime, because it can be changed into another prime (5606705205721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2803352600360 + 2803352600361.

It is an arithmetic number, because the mean of its divisors is an integer number (2803352600361).

Almost surely, 2^{5606705200721} is an apocalyptic number.

It is an amenable number.

5606705200721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5606705200721 is an equidigital number, since it uses as much as digits as its factorization.

5606705200721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 5606705200721 in words is "five trillion, six hundred six billion, seven hundred five million, two hundred thousand, seven hundred twenty-one".