66165623362 has 4 divisors (see below), whose sum is σ = 99248435046. Its totient is φ = 33082811680.

The previous prime is 66165623327. The next prime is 66165623399. The reversal of 66165623362 is 26332656166.

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., 65020410081 + 1145213281 = 254991^2 + 33841^2 .

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, 16541405839 + ... + 16541405842.

Almost surely, 2^66165623362 is an apocalyptic number.

66165623362 is a deficient number, since it is larger than the sum of its proper divisors (33082811684).

66165623362 is a wasteful number, since it uses less digits than its factorization.

66165623362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33082811683.

The product of its digits is 1399680, while the sum is 46.

The spelling of 66165623362 in words is "sixty-six billion, one hundred sixty-five million, six hundred twenty-three thousand, three hundred sixty-two".