204480599977 has 2 divisors, whose sum is σ = 204480599978. Its totient is φ = 204480599976.

The previous prime is 204480599933. The next prime is 204480599989. The reversal of 204480599977 is 779995084402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107646985216 + 96833614761 = 328096^2 + 311181^2 .

It is a cyclic number.

It is not a de Polignac number, because 204480599977 - 2¹⁵ = 204480567209 is a prime.

It is not a weakly prime, because it can be changed into another prime (204480599177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102240299988 + 102240299989.

It is an arithmetic number, because the mean of its divisors is an integer number (102240299989).

Almost surely, 2^204480599977 is an apocalyptic number.

It is an amenable number.

204480599977 is a deficient number, since it is larger than the sum of its proper divisors (1).

204480599977 is an equidigital number, since it uses as much as digits as its factorization.

204480599977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45722880, while the sum is 64.

The spelling of 204480599977 in words is "two hundred four billion, four hundred eighty million, five hundred ninety-nine thousand, nine hundred seventy-seven".