555156421067 has 2 divisors, whose sum is σ = 555156421068. Its totient is φ = 555156421066.

The previous prime is 555156421021. The next prime is 555156421087. The reversal of 555156421067 is 760124651555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555156421067 - 2⁸ = 555156420811 is a prime.

It is not a weakly prime, because it can be changed into another prime (555156421087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277578210533 + 277578210534.

It is an arithmetic number, because the mean of its divisors is an integer number (277578210534).

Almost surely, 2^555156421067 is an apocalyptic number.

555156421067 is a deficient number, since it is larger than the sum of its proper divisors (1).

555156421067 is an equidigital number, since it uses as much as digits as its factorization.

555156421067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260000, while the sum is 47.

The spelling of 555156421067 in words is "five hundred fifty-five billion, one hundred fifty-six million, four hundred twenty-one thousand, sixty-seven".