16454021170644 has 36 divisors (see below), whose sum is σ = 42212886823744. Its totient is φ = 5402812920912.

The previous prime is 16454021170603. The next prime is 16454021170649. The reversal of 16454021170644 is 44607112045461.

16454021170644 is a `hidden beast` number, since 1 + 6 + 454 + 0 + 21 + 170 + 6 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16454021170644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16454021170649) 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, 3410864332 + ... + 3410869155.

Almost surely, 2^{16454021170644} is an apocalyptic number.

It is an amenable number.

16454021170644 is an abundant number, since it is smaller than the sum of its proper divisors (25758865653100).

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

16454021170644 is a wasteful number, since it uses less digits than its factorization.

16454021170644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821733564 (or 6821733559 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 16454021170644 in words is "sixteen trillion, four hundred fifty-four billion, twenty-one million, one hundred seventy thousand, six hundred forty-four".