1161513534085 has 8 divisors (see below), whose sum is σ = 1393822183320. Its totient is φ = 929206865664.

The previous prime is 1161513534053. The next prime is 1161513534109. The reversal of 1161513534085 is 5804353151611.

It can be written as a sum of positive squares in 4 ways, for example, as 13285559169 + 1148227974916 = 115263^2 + 1071554^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161513534085 - 2⁵ = 1161513534053 is a prime.

It is a super-2 number, since 2×1161513534085² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1603209 + ... + 2212081.

It is an arithmetic number, because the mean of its divisors is an integer number (174227772915).

Almost surely, 2^{1161513534085} is an apocalyptic number.

It is an amenable number.

1161513534085 is a deficient number, since it is larger than the sum of its proper divisors (232308649235).

1161513534085 is an equidigital number, since it uses as much as digits as its factorization.

1161513534085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990407.

The product of its (nonzero) digits is 216000, while the sum is 43.

Adding to 1161513534085 its reverse (5804353151611), we get a palindrome (6965866685696).

The spelling of 1161513534085 in words is "one trillion, one hundred sixty-one billion, five hundred thirteen million, five hundred thirty-four thousand, eighty-five".