285612234877 has 4 divisors (see below), whose sum is σ = 285895300540. Its totient is φ = 285329169216.

The previous prime is 285612234863. The next prime is 285612234899. The reversal of 285612234877 is 778432216582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 207832044996 + 77780189881 = 455886^2 + 278891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285612234877 is a prime.

It is a super-2 number, since 2×285612234877² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285612234077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141531318 + ... + 141533335.

It is an arithmetic number, because the mean of its divisors is an integer number (71473825135).

Almost surely, 2^285612234877 is an apocalyptic number.

It is an amenable number.

285612234877 is a deficient number, since it is larger than the sum of its proper divisors (283065663).

285612234877 is a wasteful number, since it uses less digits than its factorization.

285612234877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283065662.

The product of its digits is 9031680, while the sum is 55.

The spelling of 285612234877 in words is "two hundred eighty-five billion, six hundred twelve million, two hundred thirty-four thousand, eight hundred seventy-seven".