36728521433 has 4 divisors (see below), whose sum is σ = 36748153728. Its totient is φ = 36708889140.

The previous prime is 36728521421. The next prime is 36728521507. The reversal of 36728521433 is 33412582763.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36728521433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36728521133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9813341 + ... + 9817082.

It is an arithmetic number, because the mean of its divisors is an integer number (9187038432).

Almost surely, 2^36728521433 is an apocalyptic number.

It is an amenable number.

36728521433 is a deficient number, since it is larger than the sum of its proper divisors (19632295).

36728521433 is a wasteful number, since it uses less digits than its factorization.

36728521433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19632294.

The product of its digits is 725760, while the sum is 44.

The spelling of 36728521433 in words is "thirty-six billion, seven hundred twenty-eight million, five hundred twenty-one thousand, four hundred thirty-three".