204513197779377 has 48 divisors (see below), whose sum is σ = 305943710392320. Its totient is φ = 131508544226400.

The previous prime is 204513197779351. The next prime is 204513197779393. The reversal of 204513197779377 is 773977791315402.

204513197779377 is a `hidden beast` number, since 2 + 0 + 4 + 513 + 1 + 9 + 7 + 7 + 79 + 37 + 7 = 666.

It is not a de Polignac number, because 204513197779377 - 2¹⁵ = 204513197746609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204513197779477) 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 in 47 ways as a sum of consecutive naturals, for example, 3024459274 + ... + 3024526892.

It is an arithmetic number, because the mean of its divisors is an integer number (6373827299840).

Almost surely, 2^{204513197779377} is an apocalyptic number.

It is an amenable number.

204513197779377 is a deficient number, since it is larger than the sum of its proper divisors (101430512612943).

204513197779377 is a wasteful number, since it uses less digits than its factorization.

204513197779377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103274 (or 103271 counting only the distinct ones).

The product of its (nonzero) digits is 490092120, while the sum is 72.

The spelling of 204513197779377 in words is "two hundred four trillion, five hundred thirteen billion, one hundred ninety-seven million, seven hundred seventy-nine thousand, three hundred seventy-seven".