74325536666 has 4 divisors (see below), whose sum is σ = 111488305002. Its totient is φ = 37162768332.

The previous prime is 74325536629. The next prime is 74325536699. The reversal of 74325536666 is 66663552347.

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

It can be written as a sum of positive squares in only one way, i.e., 71286330025 + 3039206641 = 266995^2 + 55129^2 .

It is a super-3 number, since 3×74325536666³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18581384165 + ... + 18581384168.

Almost surely, 2^74325536666 is an apocalyptic number.

74325536666 is a deficient number, since it is larger than the sum of its proper divisors (37162768336).

74325536666 is a wasteful number, since it uses less digits than its factorization.

74325536666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37162768335.

The product of its digits is 16329600, while the sum is 53.

The spelling of 74325536666 in words is "seventy-four billion, three hundred twenty-five million, five hundred thirty-six thousand, six hundred sixty-six".