502534956409 has 2 divisors, whose sum is σ = 502534956410. Its totient is φ = 502534956408.

The previous prime is 502534956401. The next prime is 502534956421. The reversal of 502534956409 is 904659435205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500754369600 + 1780586809 = 707640^2 + 42197^2 .

It is a cyclic number.

It is not a de Polignac number, because 502534956409 - 2³ = 502534956401 is a prime.

It is not a weakly prime, because it can be changed into another prime (502534956401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251267478204 + 251267478205.

It is an arithmetic number, because the mean of its divisors is an integer number (251267478205).

Almost surely, 2^502534956409 is an apocalyptic number.

It is an amenable number.

502534956409 is a deficient number, since it is larger than the sum of its proper divisors (1).

502534956409 is an equidigital number, since it uses as much as digits as its factorization.

502534956409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832000, while the sum is 52.

The spelling of 502534956409 in words is "five hundred two billion, five hundred thirty-four million, nine hundred fifty-six thousand, four hundred nine".