66598089383 has 4 divisors (see below), whose sum is σ = 76112102160. Its totient is φ = 57084076608.

The previous prime is 66598089329. The next prime is 66598089449. The reversal of 66598089383 is 38398089566.

It is a happy number.

66598089383 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66598089383 - 2²⁸ = 66329653927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66598089083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4757006378 + ... + 4757006391.

It is an arithmetic number, because the mean of its divisors is an integer number (19028025540).

Almost surely, 2^66598089383 is an apocalyptic number.

66598089383 is a deficient number, since it is larger than the sum of its proper divisors (9514012777).

66598089383 is an equidigital number, since it uses as much as digits as its factorization.

66598089383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9514012776.

The product of its (nonzero) digits is 67184640, while the sum is 65.

The spelling of 66598089383 in words is "sixty-six billion, five hundred ninety-eight million, eighty-nine thousand, three hundred eighty-three".