7045516561 has 4 divisors (see below), whose sum is σ = 7351843392. Its totient is φ = 6739189732.

The previous prime is 7045516549. The next prime is 7045516591. The reversal of 7045516561 is 1656155407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7045516561 - 2²³ = 7037127953 is a prime.

It is a super-2 number, since 2×7045516561² = 99278607222650533442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7045516591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153163381 + ... + 153163426.

It is an arithmetic number, because the mean of its divisors is an integer number (1837960848).

Almost surely, 2^7045516561 is an apocalyptic number.

It is an amenable number.

7045516561 is a deficient number, since it is larger than the sum of its proper divisors (306326831).

7045516561 is a wasteful number, since it uses less digits than its factorization.

7045516561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306326830.

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 7045516561 is about 83937.5753819468. The cubic root of 7045516561 is about 1917.0684212119.

The spelling of 7045516561 in words is "seven billion, forty-five million, five hundred sixteen thousand, five hundred sixty-one".