66603016347 has 64 divisors (see below), whose sum is σ = 114971212800. Its totient is φ = 33378324480.

The previous prime is 66603016331. The next prime is 66603016393. The reversal of 66603016347 is 74361030666.

66603016347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66603016347 - 2⁴ = 66603016331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66603016299 and 66603016308.

It is not an unprimeable number, because it can be changed into a prime (66603016327) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 333279 + ... + 494247.

It is an arithmetic number, because the mean of its divisors is an integer number (1796425200).

Almost surely, 2^66603016347 is an apocalyptic number.

66603016347 is a deficient number, since it is larger than the sum of its proper divisors (48368196453).

66603016347 is a wasteful number, since it uses less digits than its factorization.

66603016347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161076.

The product of its (nonzero) digits is 326592, while the sum is 42.

The spelling of 66603016347 in words is "sixty-six billion, six hundred three million, sixteen thousand, three hundred forty-seven".