66107892216976 has 135 divisors (see below), whose sum is σ = 132938732982657. Its totient is φ = 31846231756800.

The previous prime is 66107892216937. The next prime is 66107892217057. The reversal of 66107892216976 is 67961229870166.

It is a happy number.

The square root of 66107892216976 is 8130676.

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

It can be written as a sum of positive squares in 13 ways, for example, as 12148877554576 + 53959014662400 = 3485524^2 + 7345680^2 .

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, 164857586376 + ... + 164857586776.

Almost surely, 2^{66107892216976} is an apocalyptic number.

66107892216976 is the 8130676-th square number.

It is an amenable number.

66107892216976 is an abundant number, since it is smaller than the sum of its proper divisors (66830840765681).

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

66107892216976 is an frugal number, since it uses more digits than its factorization.

66107892216976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 70.

The spelling of 66107892216976 in words is "sixty-six trillion, one hundred seven billion, eight hundred ninety-two million, two hundred sixteen thousand, nine hundred seventy-six".