351221605338 has 16 divisors (see below), whose sum is σ = 719575972416. Its totient is φ = 114218408160.

The previous prime is 351221605313. The next prime is 351221605387. The reversal of 351221605338 is 833506122153.

It is a junction number, because it is equal to n+sod(n) for n = 351221605296 and 351221605305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713864806 + ... + 713865297.

It is an arithmetic number, because the mean of its divisors is an integer number (44973498276).

Almost surely, 2^351221605338 is an apocalyptic number.

351221605338 is an abundant number, since it is smaller than the sum of its proper divisors (368354367078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351221605338 is a wasteful number, since it uses less digits than its factorization.

351221605338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427730149.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 351221605338 in words is "three hundred fifty-one billion, two hundred twenty-one million, six hundred five thousand, three hundred thirty-eight".