16123780844 has 12 divisors (see below), whose sum is σ = 28221202968. Its totient is φ = 8060580000.

The previous prime is 16123780819. The next prime is 16123780859. The reversal of 16123780844 is 44808732161.

It is a junction number, because it is equal to n+sod(n) for n = 16123780795 and 16123780804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299657 + ... + 349344.

It is an arithmetic number, because the mean of its divisors is an integer number (2351766914).

Almost surely, 2^16123780844 is an apocalyptic number.

It is an amenable number.

16123780844 is a deficient number, since it is larger than the sum of its proper divisors (12097422124).

16123780844 is a wasteful number, since it uses less digits than its factorization.

16123780844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655216 (or 655214 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 16123780844 in words is "sixteen billion, one hundred twenty-three million, seven hundred eighty thousand, eight hundred forty-four".