442620277864117 has 2 divisors, whose sum is σ = 442620277864118. Its totient is φ = 442620277864116.

The previous prime is 442620277864069. The next prime is 442620277864183. The reversal of 442620277864117 is 711468772026244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431199926745316 + 11420351118801 = 20765354^2 + 3379401^2 .

It is a cyclic number.

It is not a de Polignac number, because 442620277864117 - 2⁷ = 442620277863989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442620277861117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221310138932058 + 221310138932059.

It is an arithmetic number, because the mean of its divisors is an integer number (221310138932059).

Almost surely, 2^{442620277864117} is an apocalyptic number.

It is an amenable number.

442620277864117 is a deficient number, since it is larger than the sum of its proper divisors (1).

442620277864117 is an equidigital number, since it uses as much as digits as its factorization.

442620277864117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50577408, while the sum is 61.

The spelling of 442620277864117 in words is "four hundred forty-two trillion, six hundred twenty billion, two hundred seventy-seven million, eight hundred sixty-four thousand, one hundred seventeen".