1616543423012 has 48 divisors (see below), whose sum is σ = 3293665200000. Its totient is φ = 679864537344.

The previous prime is 1616543423009. The next prime is 1616543423039. The reversal of 1616543423012 is 2103243456161.

It is a super-2 number, since 2×1616543423012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80114 + ... + 1799862.

It is an arithmetic number, because the mean of its divisors is an integer number (68618025000).

Almost surely, 2^{1616543423012} is an apocalyptic number.

It is an amenable number.

1616543423012 is an abundant number, since it is smaller than the sum of its proper divisors (1677121776988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1616543423012 is a wasteful number, since it uses less digits than its factorization.

1616543423012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720388 (or 1720386 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 1616543423012 its reverse (2103243456161), we get a palindrome (3719786879173).

The spelling of 1616543423012 in words is "one trillion, six hundred sixteen billion, five hundred forty-three million, four hundred twenty-three thousand, twelve".