16654555545661 has 24 divisors (see below), whose sum is σ = 18494127070560. Its totient is φ = 14872546836000.

The previous prime is 16654555545659. The next prime is 16654555545713.

16654555545661 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 16654555545661 - 2¹ = 16654555545659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16654555545593 and 16654555545602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16654555545161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17454610 + ... + 18384028.

It is an arithmetic number, because the mean of its divisors is an integer number (770588627940).

Almost surely, 2^{16654555545661} is an apocalyptic number.

16654555545661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16654555545661 is a deficient number, since it is larger than the sum of its proper divisors (1839571524899).

16654555545661 is a wasteful number, since it uses less digits than its factorization.

16654555545661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929785 (or 929658 counting only the distinct ones).

The product of its digits is 324000000, while the sum is 64.

The spelling of 16654555545661 in words is "sixteen trillion, six hundred fifty-four billion, five hundred fifty-five million, five hundred forty-five thousand, six hundred sixty-one".