1265160760065 has 12 divisors (see below), whose sum is σ = 2192945317524. Its totient is φ = 674752405344.

The previous prime is 1265160760057. The next prime is 1265160760081. The reversal of 1265160760065 is 5600670615621.

1265160760065 is a `hidden beast` number, since 1 + 2 + 6 + 516 + 0 + 76 + 0 + 0 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 208343863809 + 1056816896256 = 456447^2 + 1028016^2 .

It is not a de Polignac number, because 1265160760065 - 2³ = 1265160760057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 28114683557 = 1265160760065 / (1 + 2 + 6 + 5 + 1 + 6 + 0 + 7 + 6 + 0 + 0 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1265160760065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14057341734 + ... + 14057341823.

It is an arithmetic number, because the mean of its divisors is an integer number (182745443127).

Almost surely, 2^{1265160760065} is an apocalyptic number.

1265160760065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1265160760065 is a deficient number, since it is larger than the sum of its proper divisors (927784557459).

1265160760065 is a wasteful number, since it uses less digits than its factorization.

1265160760065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28114683568 (or 28114683565 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 1265160760065 in words is "one trillion, two hundred sixty-five billion, one hundred sixty million, seven hundred sixty thousand, sixty-five".