66076630726281 has 16 divisors (see below), whose sum is σ = 100738267987968. Its totient is φ = 37739298906000.

The previous prime is 66076630726261. The next prime is 66076630726343. The reversal of 66076630726281 is 18262703667066.

It is not a de Polignac number, because 66076630726281 - 2⁷ = 66076630726153 is a prime.

It is a super-2 number, since 2×66076630726281² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66076630726261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782281545 + ... + 782366006.

It is an arithmetic number, because the mean of its divisors is an integer number (6296141749248).

Almost surely, 2^{66076630726281} is an apocalyptic number.

It is an amenable number.

66076630726281 is a deficient number, since it is larger than the sum of its proper divisors (34661637261687).

66076630726281 is a wasteful number, since it uses less digits than its factorization.

66076630726281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564649572.

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 66076630726281 in words is "sixty-six trillion, seventy-six billion, six hundred thirty million, seven hundred twenty-six thousand, two hundred eighty-one".