619677257197 has 2 divisors, whose sum is σ = 619677257198. Its totient is φ = 619677257196.

The previous prime is 619677257191. The next prime is 619677257219. The reversal of 619677257197 is 791752776916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309885942276 + 309791314921 = 556674^2 + 556589^2 .

It is a cyclic number.

It is not a de Polignac number, because 619677257197 - 2³⁵ = 585317518829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (619677257191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309838628598 + 309838628599.

It is an arithmetic number, because the mean of its divisors is an integer number (309838628599).

Almost surely, 2^619677257197 is an apocalyptic number.

It is an amenable number.

619677257197 is a deficient number, since it is larger than the sum of its proper divisors (1).

619677257197 is an equidigital number, since it uses as much as digits as its factorization.

619677257197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70013160, while the sum is 67.

The spelling of 619677257197 in words is "six hundred nineteen billion, six hundred seventy-seven million, two hundred fifty-seven thousand, one hundred ninety-seven".