8204419209977 has 2 divisors, whose sum is σ = 8204419209978. Its totient is φ = 8204419209976.

The previous prime is 8204419209967. The next prime is 8204419210007. The reversal of 8204419209977 is 7799029144028.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4145902750201 + 4058516459776 = 2036149^2 + 2014576^2 .

It is a cyclic number.

It is not a de Polignac number, because 8204419209977 - 2⁶ = 8204419209913 is a prime.

It is not a weakly prime, because it can be changed into another prime (8204419209937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4102209604988 + 4102209604989.

It is an arithmetic number, because the mean of its divisors is an integer number (4102209604989).

Almost surely, 2^{8204419209977} is an apocalyptic number.

It is an amenable number.

8204419209977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8204419209977 is an equidigital number, since it uses as much as digits as its factorization.

8204419209977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 8204419209977 in words is "eight trillion, two hundred four billion, four hundred nineteen million, two hundred nine thousand, nine hundred seventy-seven".