36166289581 has 16 divisors (see below), whose sum is σ = 37779436800. Its totient is φ = 34595251648.

The previous prime is 36166289561. The next prime is 36166289603. The reversal of 36166289581 is 18598266163.

It is not a de Polignac number, because 36166289581 - 2⁹ = 36166289069 is a prime.

It is a super-3 number, since 3×36166289581³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36166289561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442035 + ... + 517423.

It is an arithmetic number, because the mean of its divisors is an integer number (2361214800).

Almost surely, 2^36166289581 is an apocalyptic number.

It is an amenable number.

36166289581 is a deficient number, since it is larger than the sum of its proper divisors (1613147219).

36166289581 is a wasteful number, since it uses less digits than its factorization.

36166289581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75668.

The product of its digits is 3732480, while the sum is 55.

The spelling of 36166289581 in words is "thirty-six billion, one hundred sixty-six million, two hundred eighty-nine thousand, five hundred eighty-one".