285661230866506 has 32 divisors (see below), whose sum is σ = 467623029184128. Its totient is φ = 129796748821440.

The previous prime is 285661230866497. The next prime is 285661230866533. The reversal of 285661230866506 is 605668032166582.

It is a happy number.

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, 901399176 + ... + 901716028.

It is an arithmetic number, because the mean of its divisors is an integer number (14613219662004).

Almost surely, 2^{285661230866506} is an apocalyptic number.

285661230866506 is a deficient number, since it is larger than the sum of its proper divisors (181961798317622).

285661230866506 is a wasteful number, since it uses less digits than its factorization.

285661230866506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332286.

The product of its (nonzero) digits is 149299200, while the sum is 64.

The spelling of 285661230866506 in words is "two hundred eighty-five trillion, six hundred sixty-one billion, two hundred thirty million, eight hundred sixty-six thousand, five hundred six".