285678434027 has 12 divisors (see below), whose sum is σ = 332339054040. Its totient is φ = 244853050176.

The previous prime is 285678434023. The next prime is 285678434077. The reversal of 285678434027 is 720434876582.

It is not a de Polignac number, because 285678434027 - 2² = 285678434023 is a prime.

It is a super-2 number, since 2×285678434027² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285678434021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 734924 + ... + 1054262.

It is an arithmetic number, because the mean of its divisors is an integer number (27694921170).

Almost surely, 2^285678434027 is an apocalyptic number.

285678434027 is a deficient number, since it is larger than the sum of its proper divisors (46660620013).

285678434027 is a wasteful number, since it uses less digits than its factorization.

285678434027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337610 (or 337603 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 56.

The spelling of 285678434027 in words is "two hundred eighty-five billion, six hundred seventy-eight million, four hundred thirty-four thousand, twenty-seven".