11836740644 has 6 divisors (see below), whose sum is σ = 20714296134. Its totient is φ = 5918370320.

The previous prime is 11836740613. The next prime is 11836740649. The reversal of 11836740644 is 44604763811.

It can be written as a sum of positive squares in only one way, i.e., 11614372900 + 222367744 = 107770^2 + 14912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11836740595 and 11836740604.

It is not an unprimeable number, because it can be changed into a prime (11836740649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1479592577 + ... + 1479592584.

It is an arithmetic number, because the mean of its divisors is an integer number (3452382689).

Almost surely, 2^11836740644 is an apocalyptic number.

It is an amenable number.

11836740644 is a deficient number, since it is larger than the sum of its proper divisors (8877555490).

11836740644 is a wasteful number, since it uses less digits than its factorization.

11836740644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959185165 (or 2959185163 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 11836740644 in words is "eleven billion, eight hundred thirty-six million, seven hundred forty thousand, six hundred forty-four".