285295247905 has 8 divisors (see below), whose sum is σ = 344853234792. Its totient is φ = 226570240128.

The previous prime is 285295247893. The next prime is 285295247927. The reversal of 285295247905 is 509742592582.

It can be written as a sum of positive squares in 4 ways, for example, as 1459264 + 285293788641 = 1208^2 + 534129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 285295247905 - 2⁷ = 285295247777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285295247905.

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, 208244022 + ... + 208245391.

It is an arithmetic number, because the mean of its divisors is an integer number (43106654349).

Almost surely, 2^285295247905 is an apocalyptic number.

It is an amenable number.

285295247905 is a deficient number, since it is larger than the sum of its proper divisors (59557986887).

285295247905 is a wasteful number, since it uses less digits than its factorization.

285295247905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416489555.

The product of its (nonzero) digits is 18144000, while the sum is 58.

The spelling of 285295247905 in words is "two hundred eighty-five billion, two hundred ninety-five million, two hundred forty-seven thousand, nine hundred five".