1161486864729 has 15 divisors (see below), whose sum is σ = 1735075114597. Its totient is φ = 774318110148.

The previous prime is 1161486864721. The next prime is 1161486864763. The reversal of 1161486864729 is 9274686841611.

The square root of 1161486864729 is 1077723.

It is a perfect power (a square), and thus also a powerful number.

1161486864729 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 4 + 86 + 86 + 472 + 9 = 666.

It is not a de Polignac number, because 1161486864729 - 2³ = 1161486864721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161486864721) 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 14 ways as a sum of consecutive naturals, for example, 9639634 + ... + 9759380.

Almost surely, 2^{1161486864729} is an apocalyptic number.

1161486864729 is the 1077723-rd square number.

1161486864729 is the 538862-nd centered octagonal number.

It is an amenable number.

1161486864729 is a deficient number, since it is larger than the sum of its proper divisors (573588249868).

1161486864729 is an frugal number, since it uses more digits than its factorization.

1161486864729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239506 (or 119750 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The spelling of 1161486864729 in words is "one trillion, one hundred sixty-one billion, four hundred eighty-six million, eight hundred sixty-four thousand, seven hundred twenty-nine".