16489988998461 has 96 divisors (see below), whose sum is σ = 27115078588416. Its totient is φ = 9569168928000.

The previous prime is 16489988998397. The next prime is 16489988998471.

16489988998461 is a `hidden beast` number, since 1 + 6 + 489 + 9 + 8 + 89 + 9 + 8 + 46 + 1 = 666.

16489988998461 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 16489988998461 - 2⁶ = 16489988998397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16489988998471) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73587390 + ... + 73811136.

It is an arithmetic number, because the mean of its divisors is an integer number (282448735296).

Almost surely, 2^{16489988998461} is an apocalyptic number.

16489988998461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16489988998461 is a deficient number, since it is larger than the sum of its proper divisors (10625089589955).

16489988998461 is a wasteful number, since it uses less digits than its factorization.

16489988998461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224143 (or 224140 counting only the distinct ones).

The product of its digits is 15479341056, while the sum is 90.

The spelling of 16489988998461 in words is "sixteen trillion, four hundred eighty-nine billion, nine hundred eighty-eight million, nine hundred ninety-eight thousand, four hundred sixty-one".