42445553077 has 2 divisors, whose sum is σ = 42445553078. Its totient is φ = 42445553076.

The previous prime is 42445552993. The next prime is 42445553083. The reversal of 42445553077 is 77035554424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39930430276 + 2515122801 = 199826^2 + 50151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42445553077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42445553377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222776538 + 21222776539.

It is an arithmetic number, because the mean of its divisors is an integer number (21222776539).

Almost surely, 2^42445553077 is an apocalyptic number.

It is an amenable number.

42445553077 is a deficient number, since it is larger than the sum of its proper divisors (1).

42445553077 is an equidigital number, since it uses as much as digits as its factorization.

42445553077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352000, while the sum is 46.

The spelling of 42445553077 in words is "forty-two billion, four hundred forty-five million, five hundred fifty-three thousand, seventy-seven".