16604748681481 has 16 divisors (see below), whose sum is σ = 17453959864704. Its totient is φ = 15766506980224.

The previous prime is 16604748681473. The next prime is 16604748681487. The reversal of 16604748681481 is 18418684740661.

It is not a de Polignac number, because 16604748681481 - 2³ = 16604748681473 is a prime.

It is a super-2 number, since 2×16604748681481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16604748681487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2128996 + ... + 6143461.

It is an arithmetic number, because the mean of its divisors is an integer number (1090872491544).

Almost surely, 2^{16604748681481} is an apocalyptic number.

It is an amenable number.

16604748681481 is a deficient number, since it is larger than the sum of its proper divisors (849211183223).

16604748681481 is a wasteful number, since it uses less digits than its factorization.

16604748681481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273120.

The product of its (nonzero) digits is 49545216, while the sum is 64.

The spelling of 16604748681481 in words is "sixteen trillion, six hundred four billion, seven hundred forty-eight million, six hundred eighty-one thousand, four hundred eighty-one".