16401374805744 has 60 divisors (see below), whose sum is σ = 45905603712696. Its totient is φ = 5466584912256.

The previous prime is 16401374805731. The next prime is 16401374805749. The reversal of 16401374805744 is 44750847310461.

16401374805744 is a `hidden beast` number, since 1 + 6 + 40 + 1 + 37 + 480 + 57 + 44 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401374805749) 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, 4161022 + ... + 7079325.

Almost surely, 2^{16401374805744} is an apocalyptic number.

It is an amenable number.

16401374805744 is an abundant number, since it is smaller than the sum of its proper divisors (29504228906952).

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

16401374805744 is a wasteful number, since it uses less digits than its factorization.

16401374805744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11250494 (or 11250485 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 16401374805744 in words is "sixteen trillion, four hundred one billion, three hundred seventy-four million, eight hundred five thousand, seven hundred forty-four".