1161085685828 has 12 divisors (see below), whose sum is σ = 2052847373052. Its totient is φ = 574557864960.

The previous prime is 1161085685827. The next prime is 1161085685857. The reversal of 1161085685828 is 8285865801611.

It can be written as a sum of positive squares in 2 ways, for example, as 611245639684 + 549840046144 = 781822^2 + 741512^2 .

It is not an unprimeable number, because it can be changed into a prime (1161085685827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1496244053 + ... + 1496244828.

It is an arithmetic number, because the mean of its divisors is an integer number (171070614421).

Almost surely, 2^{1161085685828} is an apocalyptic number.

It is an amenable number.

1161085685828 is a deficient number, since it is larger than the sum of its proper divisors (891761687224).

1161085685828 is a wasteful number, since it uses less digits than its factorization.

1161085685828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992488982 (or 2992488980 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 59.

The spelling of 1161085685828 in words is "one trillion, one hundred sixty-one billion, eighty-five million, six hundred eighty-five thousand, eight hundred twenty-eight".