628500690991 has 2 divisors, whose sum is σ = 628500690992. Its totient is φ = 628500690990.

The previous prime is 628500690973. The next prime is 628500691061. The reversal of 628500690991 is 199096005826.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628500690991 - 2¹⁵ = 628500658223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628500696991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314250345495 + 314250345496.

It is an arithmetic number, because the mean of its divisors is an integer number (314250345496).

Almost surely, 2^628500690991 is an apocalyptic number.

628500690991 is a deficient number, since it is larger than the sum of its proper divisors (1).

628500690991 is an equidigital number, since it uses as much as digits as its factorization.

628500690991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 628500690991 in words is "six hundred twenty-eight billion, five hundred million, six hundred ninety thousand, nine hundred ninety-one".