503146155760561 has 2 divisors, whose sum is σ = 503146155760562. Its totient is φ = 503146155760560.

The previous prime is 503146155760499. The next prime is 503146155760637. The reversal of 503146155760561 is 165067551641305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312980538857536 + 190165616903025 = 17691256^2 + 13790055^2 .

It is a cyclic number.

It is not a de Polignac number, because 503146155760561 - 2⁹ = 503146155760049 is a prime.

It is a super-2 number, since 2×503146155760561² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (503146159760561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251573077880280 + 251573077880281.

It is an arithmetic number, because the mean of its divisors is an integer number (251573077880281).

Almost surely, 2^{503146155760561} is an apocalyptic number.

It is an amenable number.

503146155760561 is a deficient number, since it is larger than the sum of its proper divisors (1).

503146155760561 is an equidigital number, since it uses as much as digits as its factorization.

503146155760561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340000, while the sum is 55.

The spelling of 503146155760561 in words is "five hundred three trillion, one hundred forty-six billion, one hundred fifty-five million, seven hundred sixty thousand, five hundred sixty-one".