10342707721 has 2 divisors, whose sum is σ = 10342707722. Its totient is φ = 10342707720.

The previous prime is 10342707719. The next prime is 10342707733. The reversal of 10342707721 is 12770724301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8625765625 + 1716942096 = 92875^2 + 41436^2 .

It is a cyclic number.

It is not a de Polignac number, because 10342707721 - 2¹ = 10342707719 is a prime.

Together with 10342707719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10342707701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5171353860 + 5171353861.

It is an arithmetic number, because the mean of its divisors is an integer number (5171353861).

Almost surely, 2^10342707721 is an apocalyptic number.

It is an amenable number.

10342707721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10342707721 is an equidigital number, since it uses as much as digits as its factorization.

10342707721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 34.

The spelling of 10342707721 in words is "ten billion, three hundred forty-two million, seven hundred seven thousand, seven hundred twenty-one".