11843984564 has 12 divisors (see below), whose sum is σ = 21018902688. Its totient is φ = 5838583800.

The previous prime is 11843984561. The next prime is 11843984587. The reversal of 11843984564 is 46548934811.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11843984561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20851802 + ... + 20852369.

It is an arithmetic number, because the mean of its divisors is an integer number (1751575224).

Almost surely, 2^11843984564 is an apocalyptic number.

It is an amenable number.

11843984564 is a deficient number, since it is larger than the sum of its proper divisors (9174918124).

11843984564 is a wasteful number, since it uses less digits than its factorization.

11843984564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41704246 (or 41704244 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 53.

The spelling of 11843984564 in words is "eleven billion, eight hundred forty-three million, nine hundred eighty-four thousand, five hundred sixty-four".