7666514643 has 16 divisors (see below), whose sum is σ = 10325952000. Its totient is φ = 5059089024.

The previous prime is 7666514621. The next prime is 7666514699. The reversal of 7666514643 is 3464156667.

It is not a de Polignac number, because 7666514643 - 2⁶ = 7666514579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7666514592 and 7666514601.

It is not an unprimeable number, because it can be changed into a prime (7666514543) 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, 922555 + ... + 930827.

It is an arithmetic number, because the mean of its divisors is an integer number (645372000).

Almost surely, 2^7666514643 is an apocalyptic number.

7666514643 is a deficient number, since it is larger than the sum of its proper divisors (2659437357).

7666514643 is a wasteful number, since it uses less digits than its factorization.

7666514643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11378.

The product of its digits is 2177280, while the sum is 48.

The square root of 7666514643 is about 87558.6354564757. The cubic root of 7666514643 is about 1971.8141999124.

The spelling of 7666514643 in words is "seven billion, six hundred sixty-six million, five hundred fourteen thousand, six hundred forty-three".