985263557305 has 8 divisors (see below), whose sum is σ = 1182430707912. Its totient is φ = 788134553088.

The previous prime is 985263557261. The next prime is 985263557323. The reversal of 985263557305 is 503755362589.

985263557305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 115067494656 + 870196062649 = 339216^2 + 932843^2 .

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 985263557305 - 2²¹ = 985261460153 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 985263557305.

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, 9479742 + ... + 9583111.

It is an arithmetic number, because the mean of its divisors is an integer number (147803838489).

Almost surely, 2^985263557305 is an apocalyptic number.

It is an amenable number.

985263557305 is a deficient number, since it is larger than the sum of its proper divisors (197167150607).

985263557305 is a wasteful number, since it uses less digits than its factorization.

985263557305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19073195.

The product of its (nonzero) digits is 34020000, while the sum is 58.

The spelling of 985263557305 in words is "nine hundred eighty-five billion, two hundred sixty-three million, five hundred fifty-seven thousand, three hundred five".