36520356609 has 27 divisors (see below), whose sum is σ = 57993206817. Its totient is φ = 22129727400.

The previous prime is 36520356599. The next prime is 36520356623. The reversal of 36520356609 is 90665302563.

The square root of 36520356609 is 191103.

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

36520356609 is a `hidden beast` number, since 3 + 6 + 5 + 2 + 0 + 35 + 6 + 609 = 666.

It is not a de Polignac number, because 36520356609 - 2²¹ = 36518259457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36520356659) 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 in 26 ways as a sum of consecutive naturals, for example, 6303504 + ... + 6309294.

Almost surely, 2^36520356609 is an apocalyptic number.

36520356609 is the 191103-rd square number.

36520356609 is the 95552-nd centered octagonal number.

It is an amenable number.

36520356609 is a deficient number, since it is larger than the sum of its proper divisors (21472850208).

36520356609 is an frugal number, since it uses more digits than its factorization.

36520356609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11610 (or 5805 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 45.

It can be divided in two parts, 36520 and 356609, that added together give a square (393129 = 627²).

The spelling of 36520356609 in words is "thirty-six billion, five hundred twenty million, three hundred fifty-six thousand, six hundred nine".