36739422721 has 8 divisors (see below), whose sum is σ = 39849360264. Its totient is φ = 33734906880.

The previous prime is 36739422719. The next prime is 36739422749. The reversal of 36739422721 is 12722493763.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91680625 + 36647742096 = 9575^2 + 191436^2 .

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 36739422721 - 2¹ = 36739422719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36739422781) 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, 26354700 + ... + 26356093.

It is an arithmetic number, because the mean of its divisors is an integer number (4981170033).

Almost surely, 2^36739422721 is an apocalyptic number.

It is an amenable number.

36739422721 is a deficient number, since it is larger than the sum of its proper divisors (3109937543).

36739422721 is a wasteful number, since it uses less digits than its factorization.

36739422721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52710851.

The product of its digits is 762048, while the sum is 46.

The spelling of 36739422721 in words is "thirty-six billion, seven hundred thirty-nine million, four hundred twenty-two thousand, seven hundred twenty-one".