7665453643 has 2 divisors, whose sum is σ = 7665453644. Its totient is φ = 7665453642.

The previous prime is 7665453619. The next prime is 7665453659. The reversal of 7665453643 is 3463545667.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7665453643 is a prime.

It is not a weakly prime, because it can be changed into another prime (7665453343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832726821 + 3832726822.

It is an arithmetic number, because the mean of its divisors is an integer number (3832726822).

Almost surely, 2^7665453643 is an apocalyptic number.

7665453643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7665453643 is an equidigital number, since it uses as much as digits as its factorization.

7665453643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 49.

The square root of 7665453643 is about 87552.5764498110. The cubic root of 7665453643 is about 1971.7232332658.

The spelling of 7665453643 in words is "seven billion, six hundred sixty-five million, four hundred fifty-three thousand, six hundred forty-three".