1165150565001 has 6 divisors (see below), whose sum is σ = 1682995260570. Its totient is φ = 776767043328.

The previous prime is 1165150564969. The next prime is 1165150565021. The reversal of 1165150565001 is 1005650515611.

It is a happy number.

1165150565001 is a `hidden beast` number, since 1 + 1 + 6 + 51 + 50 + 56 + 500 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1046160752400 + 118989812601 = 1022820^2 + 344949^2 .

It is not a de Polignac number, because 1165150565001 - 2⁵ = 1165150564969 is a prime.

It is a super-2 number, since 2×1165150565001² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1165150565021) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 64730586936 + ... + 64730586953.

It is an arithmetic number, because the mean of its divisors is an integer number (280499210095).

Almost surely, 2^{1165150565001} is an apocalyptic number.

It is an amenable number.

1165150565001 is a deficient number, since it is larger than the sum of its proper divisors (517844695569).

1165150565001 is a wasteful number, since it uses less digits than its factorization.

1165150565001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129461173895 (or 129461173892 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 1165150565001 in words is "one trillion, one hundred sixty-five billion, one hundred fifty million, five hundred sixty-five thousand, one".