36046439881 has 3 divisors (see below), whose sum is σ = 36046629741. Its totient is φ = 36046250022.

The previous prime is 36046439879. The next prime is 36046439887. The reversal of 36046439881 is 18893464063.

The square root of 36046439881 is 189859.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18893464063 = 17 ⋅1111380239.

It is not a de Polignac number, because 36046439881 - 2¹ = 36046439879 is a prime.

It is a super-2 number, since 2×36046439881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36046439887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 94930 + ... + 284788.

It is an arithmetic number, because the mean of its divisors is an integer number (12015543247).

Almost surely, 2^36046439881 is an apocalyptic number.

36046439881 is the 189859-th square number.

36046439881 is the 94930-th centered octagonal number.

It is an amenable number.

36046439881 is a deficient number, since it is larger than the sum of its proper divisors (189860).

36046439881 is an frugal number, since it uses more digits than its factorization.

36046439881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379718 (or 189859 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 36046439881 in words is "thirty-six billion, forty-six million, four hundred thirty-nine thousand, eight hundred eighty-one".