442200108810661 has 2 divisors, whose sum is σ = 442200108810662. Its totient is φ = 442200108810660.

The previous prime is 442200108810641. The next prime is 442200108810667. The reversal of 442200108810661 is 166018801002244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391520659708161 + 50679449102500 = 19786881^2 + 7118950^2 .

It is a cyclic number.

It is not a de Polignac number, because 442200108810661 - 2²³ = 442200100422053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442200108810667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221100054405330 + 221100054405331.

It is an arithmetic number, because the mean of its divisors is an integer number (221100054405331).

Almost surely, 2^{442200108810661} is an apocalyptic number.

It is an amenable number.

442200108810661 is a deficient number, since it is larger than the sum of its proper divisors (1).

442200108810661 is an equidigital number, since it uses as much as digits as its factorization.

442200108810661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 442200108810661 in words is "four hundred forty-two trillion, two hundred billion, one hundred eight million, eight hundred ten thousand, six hundred sixty-one".