56665397203 has 16 divisors (see below), whose sum is σ = 61421134464. Its totient is φ = 52073118720.

The previous prime is 56665397167. The next prime is 56665397227. The reversal of 56665397203 is 30279356665.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56665397203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56665397263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252151 + ... + 420607.

It is an arithmetic number, because the mean of its divisors is an integer number (3838820904).

Almost surely, 2^56665397203 is an apocalyptic number.

56665397203 is a deficient number, since it is larger than the sum of its proper divisors (4755737261).

56665397203 is a wasteful number, since it uses less digits than its factorization.

56665397203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168942.

The product of its (nonzero) digits is 6123600, while the sum is 52.

The spelling of 56665397203 in words is "fifty-six billion, six hundred sixty-five million, three hundred ninety-seven thousand, two hundred three".