501340534129 has 2 divisors, whose sum is σ = 501340534130. Its totient is φ = 501340534128.

The previous prime is 501340534073. The next prime is 501340534193. The reversal of 501340534129 is 921435043105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441889903504 + 59450630625 = 664748^2 + 243825^2 .

It is a cyclic number.

It is not a de Polignac number, because 501340534129 - 2⁷ = 501340534001 is a prime.

It is not a weakly prime, because it can be changed into another prime (501340534529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250670267064 + 250670267065.

It is an arithmetic number, because the mean of its divisors is an integer number (250670267065).

Almost surely, 2^501340534129 is an apocalyptic number.

It is an amenable number.

501340534129 is a deficient number, since it is larger than the sum of its proper divisors (1).

501340534129 is an equidigital number, since it uses as much as digits as its factorization.

501340534129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 501340534129 in words is "five hundred one billion, three hundred forty million, five hundred thirty-four thousand, one hundred twenty-nine".