393338442108266 has 8 divisors (see below), whose sum is σ = 604398093971364. Its totient is φ = 191872410784480.

The previous prime is 393338442108239. The next prime is 393338442108277. The reversal of 393338442108266 is 662801244833393.

It can be written as a sum of positive squares in 2 ways, for example, as 391982780088025 + 1355662020241 = 19798555^2 + 1164329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 393338442108199 and 393338442108208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2398405134725 + ... + 2398405134888.

Almost surely, 2^{393338442108266} is an apocalyptic number.

393338442108266 is a deficient number, since it is larger than the sum of its proper divisors (211059651863098).

393338442108266 is a wasteful number, since it uses less digits than its factorization.

393338442108266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796810269656.

The product of its (nonzero) digits is 107495424, while the sum is 62.

The spelling of 393338442108266 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-six".