16661053304402 has 16 divisors (see below), whose sum is σ = 27009788587992. Its totient is φ = 7662351365760.

The previous prime is 16661053304333. The next prime is 16661053304429. The reversal of 16661053304402 is 20440335016661.

It can be written as a sum of positive squares in 4 ways, for example, as 12685771000681 + 3975282303721 = 3561709^2 + 1993811^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16661053304402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140223553 + ... + 1140238164.

Almost surely, 2^{16661053304402} is an apocalyptic number.

16661053304402 is a deficient number, since it is larger than the sum of its proper divisors (10348735283590).

16661053304402 is a wasteful number, since it uses less digits than its factorization.

16661053304402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280462013.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 16661053304402 in words is "sixteen trillion, six hundred sixty-one billion, fifty-three million, three hundred four thousand, four hundred two".