505555554306139 has 2 divisors, whose sum is σ = 505555554306140. Its totient is φ = 505555554306138.

The previous prime is 505555554306113. The next prime is 505555554306211. The reversal of 505555554306139 is 931603455555505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505555554306139 - 2⁴¹ = 503356531050587 is a prime.

It is not a weakly prime, because it can be changed into another prime (505555554306109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252777777153069 + 252777777153070.

It is an arithmetic number, because the mean of its divisors is an integer number (252777777153070).

Almost surely, 2^{505555554306139} is an apocalyptic number.

505555554306139 is a deficient number, since it is larger than the sum of its proper divisors (1).

505555554306139 is an equidigital number, since it uses as much as digits as its factorization.

505555554306139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151875000, while the sum is 61.

The spelling of 505555554306139 in words is "five hundred five trillion, five hundred fifty-five billion, five hundred fifty-four million, three hundred six thousand, one hundred thirty-nine".