628966265923 has 2 divisors, whose sum is σ = 628966265924. Its totient is φ = 628966265922.

The previous prime is 628966265887. The next prime is 628966265927. The reversal of 628966265923 is 329562669826.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628966265923 is a prime.

It is a super-4 number, since 4×628966265923⁴ (a number of 48 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (628966265927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314483132961 + 314483132962.

It is an arithmetic number, because the mean of its divisors is an integer number (314483132962).

Almost surely, 2^628966265923 is an apocalyptic number.

628966265923 is a deficient number, since it is larger than the sum of its proper divisors (1).

628966265923 is an equidigital number, since it uses as much as digits as its factorization.

628966265923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100776960, while the sum is 64.

The spelling of 628966265923 in words is "six hundred twenty-eight billion, nine hundred sixty-six million, two hundred sixty-five thousand, nine hundred twenty-three".