11766644644 has 6 divisors (see below), whose sum is σ = 20591628134. Its totient is φ = 5883322320.

The previous prime is 11766644621. The next prime is 11766644647. The reversal of 11766644644 is 44644666711.

It can be written as a sum of positive squares in only one way, i.e., 11638094400 + 128550244 = 107880^2 + 11338^2 .

It is not an unprimeable number, because it can be changed into a prime (11766644647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1470830577 + ... + 1470830584.

Almost surely, 2^11766644644 is an apocalyptic number.

It is an amenable number.

11766644644 is a deficient number, since it is larger than the sum of its proper divisors (8824983490).

11766644644 is a wasteful number, since it uses less digits than its factorization.

11766644644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2941661165 (or 2941661163 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 49.

The spelling of 11766644644 in words is "eleven billion, seven hundred sixty-six million, six hundred forty-four thousand, six hundred forty-four".