66126240773271 has 48 divisors (see below), whose sum is σ = 109242741823488. Its totient is φ = 37758055910400.

The previous prime is 66126240773239. The next prime is 66126240773317. The reversal of 66126240773271 is 17237704262166.

66126240773271 is a `hidden beast` number, since 6 + 6 + 1 + 2 + 6 + 240 + 77 + 327 + 1 = 666.

It is not a de Polignac number, because 66126240773271 - 2⁵ = 66126240773239 is a prime.

It is a super-3 number, since 3×66126240773271³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66126240778271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1405691511 + ... + 1405738551.

It is an arithmetic number, because the mean of its divisors is an integer number (2275890454656).

Almost surely, 2^{66126240773271} is an apocalyptic number.

66126240773271 is a deficient number, since it is larger than the sum of its proper divisors (43116501050217).

66126240773271 is a wasteful number, since it uses less digits than its factorization.

66126240773271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63332 (or 63329 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 66126240773271 in words is "sixty-six trillion, one hundred twenty-six billion, two hundred forty million, seven hundred seventy-three thousand, two hundred seventy-one".