66174092484516 has 81 divisors (see below), whose sum is σ = 171921181509441. Its totient is φ = 21461282131104.

The previous prime is 66174092484457. The next prime is 66174092484583. The reversal of 66174092484516 is 61548429047166.

The square root of 66174092484516 is 8134746.

It is a perfect power (a square), and thus also a powerful number.

66174092484516 is a `hidden beast` number, since 6 + 6 + 1 + 74 + 0 + 9 + 2 + 48 + 4 + 516 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59213486700900 + 6960605783616 = 7695030^2 + 2638296^2 .

It is a super-2 number, since 2×66174092484516² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1805895291 + ... + 1805931933.

Almost surely, 2^{66174092484516} is an apocalyptic number.

66174092484516 is the 8134746-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66174092484516

66174092484516 is an abundant number, since it is smaller than the sum of its proper divisors (105747089024925).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66174092484516 is an frugal number, since it uses more digits than its factorization.

66174092484516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73370 (or 36685 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 66174092484516 in words is "sixty-six trillion, one hundred seventy-four billion, ninety-two million, four hundred eighty-four thousand, five hundred sixteen".