11520643535636 has 24 divisors (see below), whose sum is σ = 20197746242856. Its totient is φ = 5749860556800.

The previous prime is 11520643535623. The next prime is 11520643535651. The reversal of 11520643535636 is 63653534602511.

It can be written as a sum of positive squares in 4 ways, for example, as 7831770160900 + 3688873374736 = 2798530^2 + 1920644^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28420250 + ... + 28822766.

It is an arithmetic number, because the mean of its divisors is an integer number (841572760119).

Almost surely, 2^{11520643535636} is an apocalyptic number.

It is an amenable number.

11520643535636 is a deficient number, since it is larger than the sum of its proper divisors (8677102707220).

11520643535636 is a wasteful number, since it uses less digits than its factorization.

11520643535636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415499 (or 415497 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 50.

The spelling of 11520643535636 in words is "eleven trillion, five hundred twenty billion, six hundred forty-three million, five hundred thirty-five thousand, six hundred thirty-six".