506784377129 has 2 divisors, whose sum is σ = 506784377130. Its totient is φ = 506784377128.

The previous prime is 506784377117. The next prime is 506784377167. The reversal of 506784377129 is 921773487605.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312878016025 + 193906361104 = 559355^2 + 440348^2 .

It is a cyclic number.

It is not a de Polignac number, because 506784377129 - 2⁸ = 506784376873 is a prime.

It is not a weakly prime, because it can be changed into another prime (506784377629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253392188564 + 253392188565.

It is an arithmetic number, because the mean of its divisors is an integer number (253392188565).

It is a 1-persistent number, because it is pandigital, but 2⋅506784377129 = 1013568754258 is not.

Almost surely, 2^506784377129 is an apocalyptic number.

It is an amenable number.

506784377129 is a deficient number, since it is larger than the sum of its proper divisors (1).

506784377129 is an equidigital number, since it uses as much as digits as its factorization.

506784377129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 506784377129 in words is "five hundred six billion, seven hundred eighty-four million, three hundred seventy-seven thousand, one hundred twenty-nine".