285678351338 has 32 divisors (see below), whose sum is σ = 455404861440. Its totient is φ = 134021850480.

The previous prime is 285678351313. The next prime is 285678351353. The reversal of 285678351338 is 833153876582.

It is a super-2 number, since 2×285678351338² (a number of 24 digits) contains 22 as substring.

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, 22482695 + ... + 22495397.

It is an arithmetic number, because the mean of its divisors is an integer number (14231401920).

Almost surely, 2^285678351338 is an apocalyptic number.

285678351338 is a deficient number, since it is larger than the sum of its proper divisors (169726510102).

285678351338 is a wasteful number, since it uses less digits than its factorization.

285678351338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18362.

The product of its digits is 29030400, while the sum is 59.

The spelling of 285678351338 in words is "two hundred eighty-five billion, six hundred seventy-eight million, three hundred fifty-one thousand, three hundred thirty-eight".