36641644729 has 2 divisors, whose sum is σ = 36641644730. Its totient is φ = 36641644728.

The previous prime is 36641644703. The next prime is 36641644733. The reversal of 36641644729 is 92744614663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29241000000 + 7400644729 = 171000^2 + 86027^2 .

It is a cyclic number.

It is not a de Polignac number, because 36641644729 - 2²¹ = 36639547577 is a prime.

It is a super-2 number, since 2×36641644729² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36641644769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18320822364 + 18320822365.

It is an arithmetic number, because the mean of its divisors is an integer number (18320822365).

Almost surely, 2^36641644729 is an apocalyptic number.

It is an amenable number.

36641644729 is a deficient number, since it is larger than the sum of its proper divisors (1).

36641644729 is an equidigital number, since it uses as much as digits as its factorization.

36641644729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 52.

The spelling of 36641644729 in words is "thirty-six billion, six hundred forty-one million, six hundred forty-four thousand, seven hundred twenty-nine".