320605551164603 has 16 divisors (see below), whose sum is σ = 322273839105792. Its totient is φ = 318942221004000.

The previous prime is 320605551164599. The next prime is 320605551164611. The reversal of 320605551164603 is 306461155506023.

It is a cyclic number.

It is not a de Polignac number, because 320605551164603 - 2² = 320605551164599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320605551164693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284791013 + ... + 285914553.

It is an arithmetic number, because the mean of its divisors is an integer number (20142114944112).

Almost surely, 2^{320605551164603} is an apocalyptic number.

320605551164603 is a deficient number, since it is larger than the sum of its proper divisors (1668287941189).

320605551164603 is a wasteful number, since it uses less digits than its factorization.

320605551164603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125746.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 320605551164603 in words is "three hundred twenty trillion, six hundred five billion, five hundred fifty-one million, one hundred sixty-four thousand, six hundred three".