66434242175 has 24 divisors (see below), whose sum is σ = 94447678176. Its totient is φ = 45409328640.

The previous prime is 66434242141. The next prime is 66434242223. The reversal of 66434242175 is 57124243466.

It is not a de Polignac number, because 66434242175 - 2⁸ = 66434241919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 551654 + ... + 661203.

It is an arithmetic number, because the mean of its divisors is an integer number (3935319924).

Almost surely, 2^66434242175 is an apocalyptic number.

66434242175 is a deficient number, since it is larger than the sum of its proper divisors (28013436001).

66434242175 is a wasteful number, since it uses less digits than its factorization.

66434242175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213187 (or 1213182 counting only the distinct ones).

The product of its digits is 967680, while the sum is 44.

The spelling of 66434242175 in words is "sixty-six billion, four hundred thirty-four million, two hundred forty-two thousand, one hundred seventy-five".