6750042561 has 12 divisors (see below), whose sum is σ = 9755274880. Its totient is φ = 4497622200.

The previous prime is 6750042539. The next prime is 6750042577. The reversal of 6750042561 is 1652400576.

It is a happy number.

6750042561 is a `hidden beast` number, since 6 + 7 + 50 + 0 + 42 + 561 = 666.

6750042561 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 6750042561 - 2¹⁹ = 6749518273 is a prime.

It is a super-2 number, since 2×6750042561² = 91126149150622877442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6750042511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182665 + ... + 216486.

Almost surely, 2^6750042561 is an apocalyptic number.

It is an amenable number.

6750042561 is a deficient number, since it is larger than the sum of its proper divisors (3005232319).

6750042561 is a wasteful number, since it uses less digits than its factorization.

6750042561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401036 (or 401033 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 6750042561 is about 82158.6426433641. The cubic root of 6750042561 is about 1889.8855469451.

The spelling of 6750042561 in words is "six billion, seven hundred fifty million, forty-two thousand, five hundred sixty-one".