36611118721 has 8 divisors (see below), whose sum is σ = 36870069888. Its totient is φ = 36352974000.

The previous prime is 36611118673. The next prime is 36611118727. The reversal of 36611118721 is 12781111663.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36611118721 - 2¹¹ = 36611116673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36611118727) 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 7 ways as a sum of consecutive naturals, for example, 110350 + ... + 292231.

It is an arithmetic number, because the mean of its divisors is an integer number (4608758736).

Almost surely, 2^36611118721 is an apocalyptic number.

It is an amenable number.

36611118721 is a deficient number, since it is larger than the sum of its proper divisors (258951167).

36611118721 is a wasteful number, since it uses less digits than its factorization.

36611118721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403223.

The product of its digits is 12096, while the sum is 37.

The spelling of 36611118721 in words is "thirty-six billion, six hundred eleven million, one hundred eighteen thousand, seven hundred twenty-one".