5166720770501 has 2 divisors, whose sum is σ = 5166720770502. Its totient is φ = 5166720770500.

The previous prime is 5166720770461. The next prime is 5166720770513. The reversal of 5166720770501 is 1050770276615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4668080009476 + 498640761025 = 2160574^2 + 706145^2 .

It is a cyclic number.

It is not a de Polignac number, because 5166720770501 - 2¹⁰ = 5166720769477 is a prime.

It is a super-2 number, since 2×5166720770501² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5166720770591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2583360385250 + 2583360385251.

It is an arithmetic number, because the mean of its divisors is an integer number (2583360385251).

Almost surely, 2^{5166720770501} is an apocalyptic number.

It is an amenable number.

5166720770501 is a deficient number, since it is larger than the sum of its proper divisors (1).

5166720770501 is an equidigital number, since it uses as much as digits as its factorization.

5166720770501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 617400, while the sum is 47.

The spelling of 5166720770501 in words is "five trillion, one hundred sixty-six billion, seven hundred twenty million, seven hundred seventy thousand, five hundred one".