442601660197 has 2 divisors, whose sum is σ = 442601660198. Its totient is φ = 442601660196.

The previous prime is 442601660093. The next prime is 442601660251. The reversal of 442601660197 is 791066106244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395428426561 + 47173233636 = 628831^2 + 217194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442601660197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442601660497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221300830098 + 221300830099.

It is an arithmetic number, because the mean of its divisors is an integer number (221300830099).

Almost surely, 2^442601660197 is an apocalyptic number.

It is an amenable number.

442601660197 is a deficient number, since it is larger than the sum of its proper divisors (1).

442601660197 is an equidigital number, since it uses as much as digits as its factorization.

442601660197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 442601660197 in words is "four hundred forty-two billion, six hundred one million, six hundred sixty thousand, one hundred ninety-seven".