36656689984 has 56 divisors (see below), whose sum is σ = 74065773128. Its totient is φ = 17995530240.

The previous prime is 36656689973. The next prime is 36656689999. The reversal of 36656689984 is 48998665663.

It can be written as a sum of positive squares in 4 ways, for example, as 16674040384 + 19982649600 = 129128^2 + 141360^2 .

It is a congruent number.

It is an unprimeable number.

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, 2244472 + ... + 2260744.

Almost surely, 2^36656689984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36656689984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37032886564).

36656689984 is an abundant number, since it is smaller than the sum of its proper divisors (37409083144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36656689984 is a wasteful number, since it uses less digits than its factorization.

36656689984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16923 (or 16913 counting only the distinct ones).

The product of its digits is 403107840, while the sum is 70.

The spelling of 36656689984 in words is "thirty-six billion, six hundred fifty-six million, six hundred eighty-nine thousand, nine hundred eighty-four".