619470585421 has 2 divisors, whose sum is σ = 619470585422. Its totient is φ = 619470585420.

The previous prime is 619470585413. The next prime is 619470585443. The reversal of 619470585421 is 124585074916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608595015625 + 10875569796 = 780125^2 + 104286^2 .

It is a cyclic number.

It is not a de Polignac number, because 619470585421 - 2³ = 619470585413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (619470585121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309735292710 + 309735292711.

It is an arithmetic number, because the mean of its divisors is an integer number (309735292711).

Almost surely, 2^619470585421 is an apocalyptic number.

It is an amenable number.

619470585421 is a deficient number, since it is larger than the sum of its proper divisors (1).

619470585421 is an equidigital number, since it uses as much as digits as its factorization.

619470585421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 619470585421 in words is "six hundred nineteen billion, four hundred seventy million, five hundred eighty-five thousand, four hundred twenty-one".