1165253442265 has 32 divisors (see below), whose sum is σ = 1592111832192. Its totient is φ = 811187520000.

The previous prime is 1165253442251. The next prime is 1165253442281. The reversal of 1165253442265 is 5622443525611.

It is not a de Polignac number, because 1165253442265 - 2¹³ = 1165253434073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4755411 + ... + 4994440.

It is an arithmetic number, because the mean of its divisors is an integer number (49753494756).

Almost surely, 2^{1165253442265} is an apocalyptic number.

It is an amenable number.

1165253442265 is a deficient number, since it is larger than the sum of its proper divisors (426858389927).

1165253442265 is a wasteful number, since it uses less digits than its factorization.

1165253442265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9749961.

The product of its digits is 1728000, while the sum is 46.

Adding to 1165253442265 its reverse (5622443525611), we get a palindrome (6787696967876).

The spelling of 1165253442265 in words is "one trillion, one hundred sixty-five billion, two hundred fifty-three million, four hundred forty-two thousand, two hundred sixty-five".