42128167989599 has 2 divisors, whose sum is σ = 42128167989600. Its totient is φ = 42128167989598.

The previous prime is 42128167989577. The next prime is 42128167989619. The reversal of 42128167989599 is 99598976182124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42128167989599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42128167989529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21064083994799 + 21064083994800.

It is an arithmetic number, because the mean of its divisors is an integer number (21064083994800).

Almost surely, 2^{42128167989599} is an apocalyptic number.

42128167989599 is a deficient number, since it is larger than the sum of its proper divisors (1).

42128167989599 is an equidigital number, since it uses as much as digits as its factorization.

42128167989599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1410877440, while the sum is 80.

The spelling of 42128167989599 in words is "forty-two trillion, one hundred twenty-eight billion, one hundred sixty-seven million, nine hundred eighty-nine thousand, five hundred ninety-nine".