36540643553 has 8 divisors (see below), whose sum is σ = 37094092776. Its totient is φ = 35988624000.

The previous prime is 36540643549. The next prime is 36540643561. The reversal of 36540643553 is 35534604563.

It can be written as a sum of positive squares in 4 ways, for example, as 26366290129 + 10174353424 = 162377^2 + 100868^2 .

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 36540643553 - 2² = 36540643549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36540640553) 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 7 ways as a sum of consecutive naturals, for example, 305858 + ... + 408203.

It is an arithmetic number, because the mean of its divisors is an integer number (4636761597).

Almost surely, 2^36540643553 is an apocalyptic number.

It is an amenable number.

36540643553 is a deficient number, since it is larger than the sum of its proper divisors (553449223).

36540643553 is an equidigital number, since it uses as much as digits as its factorization.

36540643553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714835.

The product of its (nonzero) digits is 1944000, while the sum is 44.

The spelling of 36540643553 in words is "thirty-six billion, five hundred forty million, six hundred forty-three thousand, five hundred fifty-three".