7545572757561 has 16 divisors (see below), whose sum is σ = 10940480694144. Its totient is φ = 4606518184704.

The previous prime is 7545572757523. The next prime is 7545572757563. The reversal of 7545572757561 is 1657572755457.

7545572757561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7545572757561 - 2⁹ = 7545572757049 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7545572757492 and 7545572757501.

It is not an unprimeable number, because it can be changed into a prime (7545572757563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1999354965 + ... + 1999358738.

It is an arithmetic number, because the mean of its divisors is an integer number (683780043384).

Almost surely, 2^{7545572757561} is an apocalyptic number.

It is an amenable number.

7545572757561 is a deficient number, since it is larger than the sum of its proper divisors (3394907936583).

7545572757561 is a wasteful number, since it uses less digits than its factorization.

7545572757561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998713760.

The product of its digits is 360150000, while the sum is 66.

The spelling of 7545572757561 in words is "seven trillion, five hundred forty-five billion, five hundred seventy-two million, seven hundred fifty-seven thousand, five hundred sixty-one".