395247399120961 has 2 divisors, whose sum is σ = 395247399120962. Its totient is φ = 395247399120960.

The previous prime is 395247399120877. The next prime is 395247399121007. The reversal of 395247399120961 is 169021993742593.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339169092903936 + 56078306217025 = 18416544^2 + 7488545^2 .

It is a cyclic number.

It is not a de Polignac number, because 395247399120961 - 2¹⁵ = 395247399088193 is a prime.

It is not a weakly prime, because it can be changed into another prime (395247399124961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197623699560480 + 197623699560481.

It is an arithmetic number, because the mean of its divisors is an integer number (197623699560481).

Almost surely, 2^{395247399120961} is an apocalyptic number.

It is an amenable number.

395247399120961 is a deficient number, since it is larger than the sum of its proper divisors (1).

395247399120961 is an equidigital number, since it uses as much as digits as its factorization.

395247399120961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 198404640, while the sum is 70.

The spelling of 395247399120961 in words is "three hundred ninety-five trillion, two hundred forty-seven billion, three hundred ninety-nine million, one hundred twenty thousand, nine hundred sixty-one".