285164532376538 has 16 divisors (see below), whose sum is σ = 442580606090280. Its totient is φ = 137639528522496.

The previous prime is 285164532376391. The next prime is 285164532376579. The reversal of 285164532376538 is 835673235461582.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 260609266699609 + 24555265676929 = 16143397^2 + 4955327^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465902195 + ... + 466513862.

Almost surely, 2^{285164532376538} is an apocalyptic number.

285164532376538 is a deficient number, since it is larger than the sum of its proper divisors (157416073713742).

285164532376538 is a wasteful number, since it uses less digits than its factorization.

285164532376538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932421361.

The product of its digits is 870912000, while the sum is 68.

The spelling of 285164532376538 in words is "two hundred eighty-five trillion, one hundred sixty-four billion, five hundred thirty-two million, three hundred seventy-six thousand, five hundred thirty-eight".