2566966171481 has 4 divisors (see below), whose sum is σ = 2678573396352. Its totient is φ = 2455358946612.

The previous prime is 2566966171477. The next prime is 2566966171541. The reversal of 2566966171481 is 1841716696652.

It is a happy number.

2566966171481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2566966171481 - 2² = 2566966171477 is a prime.

It is a super-2 number, since 2×2566966171481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2566966171181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55803612401 + ... + 55803612446.

It is an arithmetic number, because the mean of its divisors is an integer number (669643349088).

Almost surely, 2^{2566966171481} is an apocalyptic number.

It is an amenable number.

2566966171481 is a deficient number, since it is larger than the sum of its proper divisors (111607224871).

2566966171481 is a wasteful number, since it uses less digits than its factorization.

2566966171481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111607224870.

The product of its digits is 26127360, while the sum is 62.

The spelling of 2566966171481 in words is "two trillion, five hundred sixty-six billion, nine hundred sixty-six million, one hundred seventy-one thousand, four hundred eighty-one".