285629261317 has 4 divisors (see below), whose sum is σ = 295478546220. Its totient is φ = 275779976416.

The previous prime is 285629261299. The next prime is 285629261347. The reversal of 285629261317 is 713162926582.

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 79119000961 + 206510260356 = 281281^2 + 454434^2 .

It is a cyclic number.

It is not a de Polignac number, because 285629261317 - 2¹⁹ = 285628737029 is a prime.

It is a super-4 number, since 4×285629261317⁴ (a number of 47 digits) contains 4444 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 (285629261347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4924642408 + ... + 4924642465.

It is an arithmetic number, because the mean of its divisors is an integer number (73869636555).

Almost surely, 2^285629261317 is an apocalyptic number.

It is an amenable number.

285629261317 is a deficient number, since it is larger than the sum of its proper divisors (9849284903).

285629261317 is an equidigital number, since it uses as much as digits as its factorization.

285629261317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9849284902.

The product of its digits is 2177280, while the sum is 52.

The spelling of 285629261317 in words is "two hundred eighty-five billion, six hundred twenty-nine million, two hundred sixty-one thousand, three hundred seventeen".