42775766670541 has 2 divisors, whose sum is σ = 42775766670542. Its totient is φ = 42775766670540.

The previous prime is 42775766670509. The next prime is 42775766670589. The reversal of 42775766670541 is 14507666757724.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38454211713316 + 4321554957225 = 6201146^2 + 2078835^2 .

It is a cyclic number.

It is not a de Polignac number, because 42775766670541 - 2⁵ = 42775766670509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42775766670341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387883335270 + 21387883335271.

It is an arithmetic number, because the mean of its divisors is an integer number (21387883335271).

Almost surely, 2^{42775766670541} is an apocalyptic number.

It is an amenable number.

42775766670541 is a deficient number, since it is larger than the sum of its proper divisors (1).

42775766670541 is an equidigital number, since it uses as much as digits as its factorization.

42775766670541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414892800, while the sum is 67.

The spelling of 42775766670541 in words is "forty-two trillion, seven hundred seventy-five billion, seven hundred sixty-six million, six hundred seventy thousand, five hundred forty-one".