351668520338 has 16 divisors (see below), whose sum is σ = 533136714264. Its totient is φ = 173958969600.

The previous prime is 351668520331. The next prime is 351668520347. The reversal of 351668520338 is 833025866153.

It can be written as a sum of positive squares in 4 ways, for example, as 333417320929 + 18251199409 = 577423^2 + 135097^2 .

It is not an unprimeable number, because it can be changed into a prime (351668520331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409145 + ... + 933132.

Almost surely, 2^351668520338 is an apocalyptic number.

351668520338 is a deficient number, since it is larger than the sum of its proper divisors (181468193926).

351668520338 is a wasteful number, since it uses less digits than its factorization.

351668520338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343677.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 351668520338 in words is "three hundred fifty-one billion, six hundred sixty-eight million, five hundred twenty thousand, three hundred thirty-eight".