619679725417 has 2 divisors, whose sum is σ = 619679725418. Its totient is φ = 619679725416.

The previous prime is 619679725393. The next prime is 619679725451. The reversal of 619679725417 is 714527976916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336979089001 + 282700636416 = 580499^2 + 531696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-619679725417 is a prime.

It is not a weakly prime, because it can be changed into another prime (619679725477) 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, 309839862708 + 309839862709.

It is an arithmetic number, because the mean of its divisors is an integer number (309839862709).

Almost surely, 2^619679725417 is an apocalyptic number.

It is an amenable number.

619679725417 is a deficient number, since it is larger than the sum of its proper divisors (1).

619679725417 is an equidigital number, since it uses as much as digits as its factorization.

619679725417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40007520, while the sum is 64.

The spelling of 619679725417 in words is "six hundred nineteen billion, six hundred seventy-nine million, seven hundred twenty-five thousand, four hundred seventeen".