393338442108265 has 16 divisors (see below), whose sum is σ = 474484997360016. Its totient is φ = 313018404249600.

The previous prime is 393338442108239. The next prime is 393338442108277. The reversal of 393338442108265 is 562801244833393.

It can be written as a sum of positive squares in 8 ways, for example, as 80558666800704 + 312779775307561 = 8975448^2 + 17685581^2 .

It is not a de Polignac number, because 393338442108265 - 2⁹ = 393338442107753 is a prime.

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, 489706 + ... + 28052035.

It is an arithmetic number, because the mean of its divisors is an integer number (29655312335001).

Almost surely, 2^{393338442108265} is an apocalyptic number.

It is an amenable number.

393338442108265 is a deficient number, since it is larger than the sum of its proper divisors (81146555251751).

393338442108265 is a wasteful number, since it uses less digits than its factorization.

393338442108265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28556220.

The product of its (nonzero) digits is 89579520, while the sum is 61.

The spelling of 393338442108265 in words is "three hundred ninety-three trillion, three hundred thirty-eight billion, four hundred forty-two million, one hundred eight thousand, two hundred sixty-five".