244707377664721 has 2 divisors, whose sum is σ = 244707377664722. Its totient is φ = 244707377664720.

The previous prime is 244707377664623. The next prime is 244707377664751. The reversal of 244707377664721 is 127466773707442.

It is a happy number.

244707377664721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243914458653121 + 792919011600 = 15617761^2 + 890460^2 .

It is a cyclic number.

It is not a de Polignac number, because 244707377664721 - 2⁹ = 244707377664209 is a prime.

It is not a weakly prime, because it can be changed into another prime (244707377664751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122353688832360 + 122353688832361.

It is an arithmetic number, because the mean of its divisors is an integer number (122353688832361).

Almost surely, 2^{244707377664721} is an apocalyptic number.

It is an amenable number.

244707377664721 is a deficient number, since it is larger than the sum of its proper divisors (1).

244707377664721 is an equidigital number, since it uses as much as digits as its factorization.

244707377664721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 464679936, while the sum is 67.

The spelling of 244707377664721 in words is "two hundred forty-four trillion, seven hundred seven billion, three hundred seventy-seven million, six hundred sixty-four thousand, seven hundred twenty-one".