1164665462661 has 12 divisors (see below), whose sum is σ = 1682428098988. Its totient is φ = 776382007104.

The previous prime is 1164665462603. The next prime is 1164665462671. The reversal of 1164665462661 is 1662645664611.

It is a happy number.

1164665462661 is a `hidden beast` number, since 1 + 1 + 6 + 4 + 6 + 6 + 5 + 4 + 626 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 659579501025 + 505085961636 = 812145^2 + 710694^2 .

It is not a de Polignac number, because 1164665462661 - 2⁷ = 1164665462533 is a prime.

It is a super-2 number, since 2×1164665462661² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1164665462598 and 1164665462607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164665462671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5016400 + ... + 5243433.

Almost surely, 2^{1164665462661} is an apocalyptic number.

It is an amenable number.

1164665462661 is a deficient number, since it is larger than the sum of its proper divisors (517762636327).

1164665462661 is a wasteful number, since it uses less digits than its factorization.

1164665462661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10272452 (or 10272449 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 1164665462661 in words is "one trillion, one hundred sixty-four billion, six hundred sixty-five million, four hundred sixty-two thousand, six hundred sixty-one".