7545061643 has 4 divisors (see below), whose sum is σ = 8622927600. Its totient is φ = 6467195688.

The previous prime is 7545061619. The next prime is 7545061649. The reversal of 7545061643 is 3461605457.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7545061643 - 2¹⁴ = 7545045259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7545061643.

It is not an unprimeable number, because it can be changed into a prime (7545061649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538932968 + ... + 538932981.

It is an arithmetic number, because the mean of its divisors is an integer number (2155731900).

Almost surely, 2^7545061643 is an apocalyptic number.

7545061643 is a deficient number, since it is larger than the sum of its proper divisors (1077865957).

7545061643 is a wasteful number, since it uses less digits than its factorization.

7545061643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077865956.

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 7545061643 is about 86862.3142853102. The cubic root of 7545061643 is about 1961.3462258863.

The spelling of 7545061643 in words is "seven billion, five hundred forty-five million, sixty-one thousand, six hundred forty-three".