442431100110991 has 2 divisors, whose sum is σ = 442431100110992. Its totient is φ = 442431100110990.

The previous prime is 442431100110983. The next prime is 442431100111027. The reversal of 442431100110991 is 199011001134244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442431100110991 - 2³ = 442431100110983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442431100110911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221215550055495 + 221215550055496.

It is an arithmetic number, because the mean of its divisors is an integer number (221215550055496).

Almost surely, 2^{442431100110991} is an apocalyptic number.

442431100110991 is a deficient number, since it is larger than the sum of its proper divisors (1).

442431100110991 is an equidigital number, since it uses as much as digits as its factorization.

442431100110991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 442431100110991 in words is "four hundred forty-two trillion, four hundred thirty-one billion, one hundred million, one hundred ten thousand, nine hundred ninety-one".