36728644787 has 8 divisors (see below), whose sum is σ = 37016433840. Its totient is φ = 36441861120.

The previous prime is 36728644753. The next prime is 36728644807. The reversal of 36728644787 is 78744682763.

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 36728644787 - 2⁸ = 36728644531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36728644727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177914 + ... + 324207.

It is an arithmetic number, because the mean of its divisors is an integer number (4627054230).

Almost surely, 2^36728644787 is an apocalyptic number.

36728644787 is a deficient number, since it is larger than the sum of its proper divisors (287789053).

36728644787 is a wasteful number, since it uses less digits than its factorization.

36728644787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502693.

The product of its digits is 75866112, while the sum is 62.

The spelling of 36728644787 in words is "thirty-six billion, seven hundred twenty-eight million, six hundred forty-four thousand, seven hundred eighty-seven".