66203703858 has 8 divisors (see below), whose sum is σ = 132407407728. Its totient is φ = 22067901284.

The previous prime is 66203703851. The next prime is 66203703887. The reversal of 66203703858 is 85830730266.

It is a sphenic number, since it is the product of 3 distinct primes.

66203703858 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (66203703851) 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 3 ways as a sum of consecutive naturals, for example, 5516975316 + ... + 5516975327.

It is an arithmetic number, because the mean of its divisors is an integer number (16550925966).

Almost surely, 2^66203703858 is an apocalyptic number.

66203703858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66203703858 is a wasteful number, since it uses less digits than its factorization.

66203703858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11033950648.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 66203703858 in words is "sixty-six billion, two hundred three million, seven hundred three thousand, eight hundred fifty-eight".