36506640521 has 8 divisors (see below), whose sum is σ = 39981197760. Its totient is φ = 33127276752.

The previous prime is 36506640503. The next prime is 36506640523. The reversal of 36506640521 is 12504660563.

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 36506640521 - 2²⁶ = 36439531657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36506640523) 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 7 ways as a sum of consecutive naturals, for example, 23797565 + ... + 23799098.

It is an arithmetic number, because the mean of its divisors is an integer number (4997649720).

Almost surely, 2^36506640521 is an apocalyptic number.

It is an amenable number.

36506640521 is a deficient number, since it is larger than the sum of its proper divisors (3474557239).

36506640521 is a wasteful number, since it uses less digits than its factorization.

36506640521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47596735.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 36506640521 in words is "thirty-six billion, five hundred six million, six hundred forty thousand, five hundred twenty-one".