423542012851777 has 2 divisors, whose sum is σ = 423542012851778. Its totient is φ = 423542012851776.

The previous prime is 423542012851729. The next prime is 423542012851801. The reversal of 423542012851777 is 777158210245324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361407512939841 + 62134499911936 = 19010721^2 + 7882544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423542012851777 is a prime.

It is not a weakly prime, because it can be changed into another prime (423542012851277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211771006425888 + 211771006425889.

It is an arithmetic number, because the mean of its divisors is an integer number (211771006425889).

Almost surely, 2^{423542012851777} is an apocalyptic number.

It is an amenable number.

423542012851777 is a deficient number, since it is larger than the sum of its proper divisors (1).

423542012851777 is an equidigital number, since it uses as much as digits as its factorization.

423542012851777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26342400, while the sum is 58.

The spelling of 423542012851777 in words is "four hundred twenty-three trillion, five hundred forty-two billion, twelve million, eight hundred fifty-one thousand, seven hundred seventy-seven".