16771213585 has 12 divisors (see below), whose sum is σ = 23411245428. Its totient is φ = 11500260576.

The previous prime is 16771213583. The next prime is 16771213633. The reversal of 16771213585 is 58531217761.

16771213585 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 2 ways, for example, as 7823756304 + 8947457281 = 88452^2 + 94591^2 .

It is not a de Polignac number, because 16771213585 - 2¹ = 16771213583 is a prime.

It is a super-2 number, since 2×16771213585² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16771213583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34226722 + ... + 34227211.

It is an arithmetic number, because the mean of its divisors is an integer number (1950937119).

Almost surely, 2^16771213585 is an apocalyptic number.

It is an amenable number.

16771213585 is a deficient number, since it is larger than the sum of its proper divisors (6640031843).

16771213585 is an equidigital number, since it uses as much as digits as its factorization.

16771213585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68453952 (or 68453945 counting only the distinct ones).

The product of its digits is 352800, while the sum is 46.

The spelling of 16771213585 in words is "sixteen billion, seven hundred seventy-one million, two hundred thirteen thousand, five hundred eighty-five".