36615970609 has 3 divisors (see below), whose sum is σ = 36616161963. Its totient is φ = 36615779256.

The previous prime is 36615970607. The next prime is 36615970661. The reversal of 36615970609 is 90607951663.

The square root of 36615970609 is 191353.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 21943978225 + 14671992384 = 148135^2 + 121128^2 .

It is not a de Polignac number, because 36615970609 - 2¹ = 36615970607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36615970607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 95677 + ... + 287029.

It is an arithmetic number, because the mean of its divisors is an integer number (12205387321).

Almost surely, 2^36615970609 is an apocalyptic number.

36615970609 is the 191353-rd square number.

36615970609 is the 95677-th centered octagonal number.

It is an amenable number.

36615970609 is a deficient number, since it is larger than the sum of its proper divisors (191354).

36615970609 is an frugal number, since it uses more digits than its factorization.

36615970609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382706 (or 191353 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 52.

The spelling of 36615970609 in words is "thirty-six billion, six hundred fifteen million, nine hundred seventy thousand, six hundred nine".