66430495375 has 16 divisors (see below), whose sum is σ = 82920277440. Its totient is φ = 53134768800.

The previous prime is 66430495337. The next prime is 66430495379. The reversal of 66430495375 is 57359403466.

It is a happy number.

It is not a de Polignac number, because 66430495375 - 2¹⁷ = 66430364303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66430495379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 689677 + ... + 780073.

It is an arithmetic number, because the mean of its divisors is an integer number (5182517340).

Almost surely, 2^66430495375 is an apocalyptic number.

66430495375 is a deficient number, since it is larger than the sum of its proper divisors (16489782065).

66430495375 is an equidigital number, since it uses as much as digits as its factorization.

66430495375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96291 (or 96281 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 52.

The spelling of 66430495375 in words is "sixty-six billion, four hundred thirty million, four hundred ninety-five thousand, three hundred seventy-five".