628660161277 has 2 divisors, whose sum is σ = 628660161278. Its totient is φ = 628660161276.

The previous prime is 628660161257. The next prime is 628660161307. The reversal of 628660161277 is 772161066826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596495173561 + 32164987716 = 772331^2 + 179346^2 .

It is a cyclic number.

It is not a de Polignac number, because 628660161277 - 2³⁵ = 594300422909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628660161257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314330080638 + 314330080639.

It is an arithmetic number, because the mean of its divisors is an integer number (314330080639).

Almost surely, 2^628660161277 is an apocalyptic number.

It is an amenable number.

628660161277 is a deficient number, since it is larger than the sum of its proper divisors (1).

628660161277 is an equidigital number, since it uses as much as digits as its factorization.

628660161277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 628660161277 in words is "six hundred twenty-eight billion, six hundred sixty million, one hundred sixty-one thousand, two hundred seventy-seven".