1165141131205 has 8 divisors (see below), whose sum is σ = 1399502223000. Its totient is φ = 931224327936.

The previous prime is 1165141131197. The next prime is 1165141131269. The reversal of 1165141131205 is 5021311415611.

It can be written as a sum of positive squares in 4 ways, for example, as 301789817316 + 863351313889 = 549354^2 + 929167^2 .

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 1165141131205 - 2³ = 1165141131197 is a prime.

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, 111066360 + ... + 111076849.

It is an arithmetic number, because the mean of its divisors is an integer number (174937777875).

Almost surely, 2^{1165141131205} is an apocalyptic number.

It is an amenable number.

1165141131205 is a deficient number, since it is larger than the sum of its proper divisors (234361091795).

1165141131205 is a wasteful number, since it uses less digits than its factorization.

1165141131205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222144263.

The product of its (nonzero) digits is 3600, while the sum is 31.

Adding to 1165141131205 its reverse (5021311415611), we get a palindrome (6186452546816).

The spelling of 1165141131205 in words is "one trillion, one hundred sixty-five billion, one hundred forty-one million, one hundred thirty-one thousand, two hundred five".