7666042475547 has 12 divisors (see below), whose sum is σ = 11554614746064. Its totient is φ = 4888490853840.

The previous prime is 7666042475521. The next prime is 7666042475557. The reversal of 7666042475547 is 7455742406667.

It is not a de Polignac number, because 7666042475547 - 2⁷ = 7666042475419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7666042475557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18517010604 + ... + 18517011017.

It is an arithmetic number, because the mean of its divisors is an integer number (962884562172).

Almost surely, 2^{7666042475547} is an apocalyptic number.

7666042475547 is a deficient number, since it is larger than the sum of its proper divisors (3888572270517).

7666042475547 is a wasteful number, since it uses less digits than its factorization.

7666042475547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37034021650 (or 37034021647 counting only the distinct ones).

The product of its (nonzero) digits is 237081600, while the sum is 63.

The spelling of 7666042475547 in words is "seven trillion, six hundred sixty-six billion, forty-two million, four hundred seventy-five thousand, five hundred forty-seven".