1016666667585 has 36 divisors (see below), whose sum is σ = 1783710163092. Its totient is φ = 535689261504.

The previous prime is 1016666667559. The next prime is 1016666667637. The reversal of 1016666667585 is 5857666666101.

It can be written as a sum of positive squares in 2 ways, for example, as 455677651521 + 560989016064 = 675039^2 + 748992^2 .

It is not a de Polignac number, because 1016666667585 - 2⁶ = 1016666667521 is a prime.

It is a super-2 number, since 2×1016666667585² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1329754 + ... + 1949763.

Almost surely, 2^{1016666667585} is an apocalyptic number.

1016666667585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1016666667585 is a deficient number, since it is larger than the sum of its proper divisors (767043495507).

1016666667585 is an equidigital number, since it uses as much as digits as its factorization.

1016666667585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279694 (or 3279608 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 1016666667585 in words is "one trillion, sixteen billion, six hundred sixty-six million, six hundred sixty-seven thousand, five hundred eighty-five".