36646533640 has 16 divisors (see below), whose sum is σ = 82454700780. Its totient is φ = 14658613440.

The previous prime is 36646533611. The next prime is 36646533661. The reversal of 36646533640 is 4633564663.

It can be written as a sum of positive squares in 2 ways, for example, as 35818590564 + 827943076 = 189258^2 + 28774^2 .

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 3 ways as a sum of consecutive naturals, for example, 458081631 + ... + 458081710.

Almost surely, 2^36646533640 is an apocalyptic number.

It is an amenable number.

36646533640 is an abundant number, since it is smaller than the sum of its proper divisors (45808167140).

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

36646533640 is a wasteful number, since it uses less digits than its factorization.

36646533640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916163352 (or 916163348 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 46.

The spelling of 36646533640 in words is "thirty-six billion, six hundred forty-six million, five hundred thirty-three thousand, six hundred forty".