36747727729 has 4 divisors (see below), whose sum is σ = 36880391284. Its totient is φ = 36615064176.

The previous prime is 36747727721. The next prime is 36747727771. The reversal of 36747727729 is 92772774763.

36747727729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92772774763 = 5233 ⋅17728411.

It can be written as a sum of positive squares in 2 ways, for example, as 21216835600 + 15530892129 = 145660^2 + 124623^2 .

It is a cyclic number.

It is not a de Polignac number, because 36747727729 - 2³ = 36747727721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36747727721) 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, 66331362 + ... + 66331915.

It is an arithmetic number, because the mean of its divisors is an integer number (9220097821).

Almost surely, 2^36747727729 is an apocalyptic number.

It is an amenable number.

36747727729 is a deficient number, since it is larger than the sum of its proper divisors (132663555).

36747727729 is a wasteful number, since it uses less digits than its factorization.

36747727729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132663554.

The product of its digits is 43563744, while the sum is 61.

The spelling of 36747727729 in words is "thirty-six billion, seven hundred forty-seven million, seven hundred twenty-seven thousand, seven hundred twenty-nine".