5100721057169 has 2 divisors, whose sum is σ = 5100721057170. Its totient is φ = 5100721057168.

The previous prime is 5100721057151. The next prime is 5100721057303. The reversal of 5100721057169 is 9617501270015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5099074320769 + 1646736400 = 2258113^2 + 40580^2 .

It is a cyclic number.

It is not a de Polignac number, because 5100721057169 - 2¹⁶ = 5100720991633 is a prime.

It is a super-2 number, since 2×5100721057169² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5100721057129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550360528584 + 2550360528585.

It is an arithmetic number, because the mean of its divisors is an integer number (2550360528585).

Almost surely, 2^{5100721057169} is an apocalyptic number.

It is an amenable number.

5100721057169 is a deficient number, since it is larger than the sum of its proper divisors (1).

5100721057169 is an equidigital number, since it uses as much as digits as its factorization.

5100721057169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132300, while the sum is 44.

The spelling of 5100721057169 in words is "five trillion, one hundred billion, seven hundred twenty-one million, fifty-seven thousand, one hundred sixty-nine".