442440144199973 has 2 divisors, whose sum is σ = 442440144199974. Its totient is φ = 442440144199972.

The previous prime is 442440144199969. The next prime is 442440144200017. The reversal of 442440144199973 is 379991441044244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440383739443684 + 2056404756289 = 20985322^2 + 1434017^2 .

It is a cyclic number.

It is not a de Polignac number, because 442440144199973 - 2² = 442440144199969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442440144199943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221220072099986 + 221220072099987.

It is an arithmetic number, because the mean of its divisors is an integer number (221220072099987).

Almost surely, 2^{442440144199973} is an apocalyptic number.

It is an amenable number.

442440144199973 is a deficient number, since it is larger than the sum of its proper divisors (1).

442440144199973 is an equidigital number, since it uses as much as digits as its factorization.

442440144199973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125411328, while the sum is 65.

The spelling of 442440144199973 in words is "four hundred forty-two trillion, four hundred forty billion, one hundred forty-four million, one hundred ninety-nine thousand, nine hundred seventy-three".