42443012566553 has 2 divisors, whose sum is σ = 42443012566554. Its totient is φ = 42443012566552.

The previous prime is 42443012566547. The next prime is 42443012566631. The reversal of 42443012566553 is 35566521034424.

42443012566553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39987373132249 + 2455639434304 = 6323557^2 + 1567048^2 .

It is a cyclic number.

It is not a de Polignac number, because 42443012566553 - 2²² = 42443008372249 is a prime.

It is not a weakly prime, because it can be changed into another prime (42443017566553) 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, 21221506283276 + 21221506283277.

It is an arithmetic number, because the mean of its divisors is an integer number (21221506283277).

Almost surely, 2^{42443012566553} is an apocalyptic number.

It is an amenable number.

42443012566553 is a deficient number, since it is larger than the sum of its proper divisors (1).

42443012566553 is an equidigital number, since it uses as much as digits as its factorization.

42443012566553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368000, while the sum is 50.

The spelling of 42443012566553 in words is "forty-two trillion, four hundred forty-three billion, twelve million, five hundred sixty-six thousand, five hundred fifty-three".