16554474740671 has 12 divisors (see below), whose sum is σ = 19337820392160. Its totient is φ = 14130179266560.

The previous prime is 16554474740669. The next prime is 16554474740729. The reversal of 16554474740671 is 17604747445561.

It is not a de Polignac number, because 16554474740671 - 2¹ = 16554474740669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554474744671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 706779970 + ... + 706803391.

It is an arithmetic number, because the mean of its divisors is an integer number (1611485032680).

Almost surely, 2^{16554474740671} is an apocalyptic number.

16554474740671 is a deficient number, since it is larger than the sum of its proper divisors (2783345651489).

16554474740671 is a wasteful number, since it uses less digits than its factorization.

16554474740671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413583614 (or 1413583607 counting only the distinct ones).

The product of its (nonzero) digits is 79027200, while the sum is 61.

The spelling of 16554474740671 in words is "sixteen trillion, five hundred fifty-four billion, four hundred seventy-four million, seven hundred forty thousand, six hundred seventy-one".