628161066517 has 2 divisors, whose sum is σ = 628161066518. Its totient is φ = 628161066516.

The previous prime is 628161066469. The next prime is 628161066523. The reversal of 628161066517 is 715660161826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 596417942961 + 31743123556 = 772281^2 + 178166^2 .

It is a cyclic number.

It is not a de Polignac number, because 628161066517 - 2⁷ = 628161066389 is a prime.

It is a super-2 number, since 2×628161066517² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628161060517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314080533258 + 314080533259.

It is an arithmetic number, because the mean of its divisors is an integer number (314080533259).

Almost surely, 2^628161066517 is an apocalyptic number.

It is an amenable number.

628161066517 is a deficient number, since it is larger than the sum of its proper divisors (1).

628161066517 is an equidigital number, since it uses as much as digits as its factorization.

628161066517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 628161066517 in words is "six hundred twenty-eight billion, one hundred sixty-one million, sixty-six thousand, five hundred seventeen".