1161085685826 has 32 divisors (see below), whose sum is σ = 2534029837056. Its totient is φ = 351739706000.

The previous prime is 1161085685741. The next prime is 1161085685827. The reversal of 1161085685826 is 6285865801611.

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 15 ways as a sum of consecutive naturals, for example, 2386860 + ... + 2831831.

It is an arithmetic number, because the mean of its divisors is an integer number (79188432408).

Almost surely, 2^{1161085685826} is an apocalyptic number.

1161085685826 is an abundant number, since it is smaller than the sum of its proper divisors (1372944151230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161085685826 is a wasteful number, since it uses less digits than its factorization.

1161085685826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5222078.

The product of its (nonzero) digits is 5529600, while the sum is 57.

The spelling of 1161085685826 in words is "one trillion, one hundred sixty-one billion, eighty-five million, six hundred eighty-five thousand, eight hundred twenty-six".