506505021149 has 2 divisors, whose sum is σ = 506505021150. Its totient is φ = 506505021148.

The previous prime is 506505021101. The next prime is 506505021157. The reversal of 506505021149 is 941120505605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 503290924900 + 3214096249 = 709430^2 + 56693^2 .

It is a cyclic number.

It is not a de Polignac number, because 506505021149 - 2²⁸ = 506236585693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506505023149) 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, 253252510574 + 253252510575.

It is an arithmetic number, because the mean of its divisors is an integer number (253252510575).

Almost surely, 2^506505021149 is an apocalyptic number.

It is an amenable number.

506505021149 is a deficient number, since it is larger than the sum of its proper divisors (1).

506505021149 is an equidigital number, since it uses as much as digits as its factorization.

506505021149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 506505021149 in words is "five hundred six billion, five hundred five million, twenty-one thousand, one hundred forty-nine".