1166501560065 has 16 divisors (see below), whose sum is σ = 1869417700800. Its totient is φ = 621129097152.

The previous prime is 1166501560061. The next prime is 1166501560079. The reversal of 1166501560065 is 5600651056611.

It is not a de Polignac number, because 1166501560065 - 2² = 1166501560061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166501559999 and 1166501560026.

It is not an unprimeable number, because it can be changed into a prime (1166501560061) 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, 62807170 + ... + 62825739.

It is an arithmetic number, because the mean of its divisors is an integer number (116838606300).

Almost surely, 2^{1166501560065} is an apocalyptic number.

1166501560065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166501560065 is a deficient number, since it is larger than the sum of its proper divisors (702916140735).

1166501560065 is a wasteful number, since it uses less digits than its factorization.

1166501560065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125633536.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 1166501560065 in words is "one trillion, one hundred sixty-six billion, five hundred one million, five hundred sixty thousand, sixty-five".