1585785787223 has 40 divisors (see below), whose sum is σ = 1805320510080. Its totient is φ = 1391480640000.

The previous prime is 1585785787193. The next prime is 1585785787231. The reversal of 1585785787223 is 3227875875851.

It is not a de Polignac number, because 1585785787223 - 2¹⁴ = 1585785770839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1585785787253) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 181997915 + ... + 182006627.

It is an arithmetic number, because the mean of its divisors is an integer number (45133012752).

Almost surely, 2^{1585785787223} is an apocalyptic number.

1585785787223 is a deficient number, since it is larger than the sum of its proper divisors (219534722857).

1585785787223 is an frugal number, since it uses more digits than its factorization.

1585785787223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9189 (or 9156 counting only the distinct ones).

The product of its digits is 263424000, while the sum is 68.

The spelling of 1585785787223 in words is "one trillion, five hundred eighty-five billion, seven hundred eighty-five million, seven hundred eighty-seven thousand, two hundred twenty-three".