442378505873245 has 16 divisors (see below), whose sum is σ = 545737108679280. Its totient is φ = 344042306406400.

The previous prime is 442378505873233. The next prime is 442378505873387. The reversal of 442378505873245 is 542378505873244.

It can be written as a sum of positive squares in 8 ways, for example, as 1413659172676 + 440964846700569 = 1188974^2 + 20999163^2 .

It is not a de Polignac number, because 442378505873245 - 2¹³ = 442378505865053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3839700280 + ... + 3839815489.

It is an arithmetic number, because the mean of its divisors is an integer number (34108569292455).

Almost surely, 2^{442378505873245} is an apocalyptic number.

It is an amenable number.

442378505873245 is a deficient number, since it is larger than the sum of its proper divisors (103358602806035).

442378505873245 is a wasteful number, since it uses less digits than its factorization.

442378505873245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679516096.

The product of its (nonzero) digits is 903168000, while the sum is 67.

Subtracting 442378505873245 from its reverse (542378505873244), we obtain a palindrome (99999999999999).

The spelling of 442378505873245 in words is "four hundred forty-two trillion, three hundred seventy-eight billion, five hundred five million, eight hundred seventy-three thousand, two hundred forty-five".