66567734325 has 36 divisors (see below), whose sum is σ = 119527702788. Its totient is φ = 35414208000.

The previous prime is 66567734323. The next prime is 66567734341. The reversal of 66567734325 is 52343776566.

66567734325 is a `hidden beast` number, since 6 + 6 + 567 + 73 + 4 + 3 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1265509476 + 65302224849 = 35574^2 + 255543^2 .

It is not a de Polignac number, because 66567734325 - 2¹ = 66567734323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66567734323) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 278674 + ... + 459123.

Almost surely, 2^66567734325 is an apocalyptic number.

It is an amenable number.

66567734325 is a deficient number, since it is larger than the sum of its proper divisors (52959968463).

66567734325 is a wasteful number, since it uses less digits than its factorization.

66567734325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738214 (or 738206 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 54.

The spelling of 66567734325 in words is "sixty-six billion, five hundred sixty-seven million, seven hundred thirty-four thousand, three hundred twenty-five".