21160661366306 has 64 divisors (see below), whose sum is σ = 39675354114816. Its totient is φ = 8223138662400.

The previous prime is 21160661366269. The next prime is 21160661366333. The reversal of 21160661366306 is 60366316606112.

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 31 ways as a sum of consecutive naturals, for example, 256884566 + ... + 256966926.

It is an arithmetic number, because the mean of its divisors is an integer number (619927408044).

Almost surely, 2^{21160661366306} is an apocalyptic number.

21160661366306 is a deficient number, since it is larger than the sum of its proper divisors (18514692748510).

21160661366306 is a wasteful number, since it uses less digits than its factorization.

21160661366306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86667.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 21160661366306 in words is "twenty-one trillion, one hundred sixty billion, six hundred sixty-one million, three hundred sixty-six thousand, three hundred six".