42565100663 has 2 divisors, whose sum is σ = 42565100664. Its totient is φ = 42565100662.

The previous prime is 42565100609. The next prime is 42565100689. The reversal of 42565100663 is 36600156524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42565100663 - 2¹⁰ = 42565099639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42565100063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21282550331 + 21282550332.

It is an arithmetic number, because the mean of its divisors is an integer number (21282550332).

Almost surely, 2^42565100663 is an apocalyptic number.

42565100663 is a deficient number, since it is larger than the sum of its proper divisors (1).

42565100663 is an equidigital number, since it uses as much as digits as its factorization.

42565100663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 42565100663 in words is "forty-two billion, five hundred sixty-five million, one hundred thousand, six hundred sixty-three".