66122546375 has 16 divisors (see below), whose sum is σ = 83919607200. Its totient is φ = 52001454400.

The previous prime is 66122546327. The next prime is 66122546381. The reversal of 66122546375 is 57364522166.

It is not a de Polignac number, because 66122546375 - 2²⁴ = 66105769159 is a prime.

It is a super-2 number, since 2×66122546375² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4475510 + ... + 4490259.

It is an arithmetic number, because the mean of its divisors is an integer number (5244975450).

Almost surely, 2^66122546375 is an apocalyptic number.

66122546375 is a deficient number, since it is larger than the sum of its proper divisors (17797060825).

66122546375 is an equidigital number, since it uses as much as digits as its factorization.

66122546375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8965843 (or 8965833 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 47.

The spelling of 66122546375 in words is "sixty-six billion, one hundred twenty-two million, five hundred forty-six thousand, three hundred seventy-five".