4540574752661 has 2 divisors, whose sum is σ = 4540574752662. Its totient is φ = 4540574752660.

The previous prime is 4540574752657. The next prime is 4540574752669. The reversal of 4540574752661 is 1662574750454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4132804384900 + 407770367761 = 2032930^2 + 638569^2 .

It is a cyclic number.

It is not a de Polignac number, because 4540574752661 - 2² = 4540574752657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4540574752597 and 4540574752606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4540574752669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270287376330 + 2270287376331.

It is an arithmetic number, because the mean of its divisors is an integer number (2270287376331).

Almost surely, 2^{4540574752661} is an apocalyptic number.

It is an amenable number.

4540574752661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4540574752661 is an equidigital number, since it uses as much as digits as its factorization.

4540574752661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224000, while the sum is 56.

The spelling of 4540574752661 in words is "four trillion, five hundred forty billion, five hundred seventy-four million, seven hundred fifty-two thousand, six hundred sixty-one".