7545045643 has 2 divisors, whose sum is σ = 7545045644. Its totient is φ = 7545045642.

The previous prime is 7545045631. The next prime is 7545045707. The reversal of 7545045643 is 3465405457.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7545045643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7545045643.

It is not a weakly prime, because it can be changed into another prime (7545045943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3772522821 + 3772522822.

It is an arithmetic number, because the mean of its divisors is an integer number (3772522822).

Almost surely, 2^7545045643 is an apocalyptic number.

7545045643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7545045643 is an equidigital number, since it uses as much as digits as its factorization.

7545045643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 43.

The square root of 7545045643 is about 86862.2221854818. Note that the first 3 decimals coincide. The cubic root of 7545045643 is about 1961.3448394800.

The spelling of 7545045643 in words is "seven billion, five hundred forty-five million, forty-five thousand, six hundred forty-three".