7666552641 has 16 divisors (see below), whose sum is σ = 11155350528. Its totient is φ = 4644728400.

The previous prime is 7666552639. The next prime is 7666552711. The reversal of 7666552641 is 1462556667.

It is not a de Polignac number, because 7666552641 - 2¹ = 7666552639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7666552141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55036 + ... + 135506.

It is an arithmetic number, because the mean of its divisors is an integer number (697209408).

Almost surely, 2^7666552641 is an apocalyptic number.

It is an amenable number.

7666552641 is a deficient number, since it is larger than the sum of its proper divisors (3488797887).

7666552641 is a wasteful number, since it uses less digits than its factorization.

7666552641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83372.

The product of its digits is 1814400, while the sum is 48.

The square root of 7666552641 is about 87558.8524422288. The cubic root of 7666552641 is about 1971.8174575801.

The spelling of 7666552641 in words is "seven billion, six hundred sixty-six million, five hundred fifty-two thousand, six hundred forty-one".