442432255117 has 2 divisors, whose sum is σ = 442432255118. Its totient is φ = 442432255116.

The previous prime is 442432255087. The next prime is 442432255121. The reversal of 442432255117 is 711552234244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431046084681 + 11386170436 = 656541^2 + 106706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442432255117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442432255117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442432255127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221216127558 + 221216127559.

It is an arithmetic number, because the mean of its divisors is an integer number (221216127559).

Almost surely, 2^442432255117 is an apocalyptic number.

It is an amenable number.

442432255117 is a deficient number, since it is larger than the sum of its proper divisors (1).

442432255117 is an equidigital number, since it uses as much as digits as its factorization.

442432255117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 40.

The spelling of 442432255117 in words is "four hundred forty-two billion, four hundred thirty-two million, two hundred fifty-five thousand, one hundred seventeen".