12161646044 has 6 divisors (see below), whose sum is σ = 21282880584. Its totient is φ = 6080823020.

The previous prime is 12161646041. The next prime is 12161646089. The reversal of 12161646044 is 44064616121.

It is a junction number, because it is equal to n+sod(n) for n = 12161645995 and 12161646013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161646041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1520205752 + ... + 1520205759.

It is an arithmetic number, because the mean of its divisors is an integer number (3547146764).

Almost surely, 2^12161646044 is an apocalyptic number.

It is an amenable number.

12161646044 is a deficient number, since it is larger than the sum of its proper divisors (9121234540).

12161646044 is a wasteful number, since it uses less digits than its factorization.

12161646044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040411515 (or 3040411513 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 12161646044 in words is "twelve billion, one hundred sixty-one million, six hundred forty-six thousand, forty-four".