16611542844 has 48 divisors (see below), whose sum is σ = 41865821088. Its totient is φ = 5096060928.

The previous prime is 16611542803. The next prime is 16611542873. The reversal of 16611542844 is 44824511661.

It is a junction number, because it is equal to n+sod(n) for n = 16611542796 and 16611542805.

It is a congruent number.

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, 105417 + ... + 210560.

It is an arithmetic number, because the mean of its divisors is an integer number (872204606).

Almost surely, 2^16611542844 is an apocalyptic number.

It is an amenable number.

16611542844 is an abundant number, since it is smaller than the sum of its proper divisors (25254278244).

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

16611542844 is a wasteful number, since it uses less digits than its factorization.

16611542844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316334 (or 316332 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The spelling of 16611542844 in words is "sixteen billion, six hundred eleven million, five hundred forty-two thousand, eight hundred forty-four".