204513197779376 has 80 divisors (see below), whose sum is σ = 424384781608800. Its totient is φ = 95192423921664.

The previous prime is 204513197779351. The next prime is 204513197779393. The reversal of 204513197779376 is 673977791315402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11159771 + ... + 23099066.

It is an arithmetic number, because the mean of its divisors is an integer number (5304809770110).

Almost surely, 2^{204513197779376} is an apocalyptic number.

It is an amenable number.

204513197779376 is an abundant number, since it is smaller than the sum of its proper divisors (219871583829424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204513197779376 is a wasteful number, since it uses less digits than its factorization.

204513197779376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34259206 (or 34259200 counting only the distinct ones).

The product of its (nonzero) digits is 420078960, while the sum is 71.

The spelling of 204513197779376 in words is "two hundred four trillion, five hundred thirteen billion, one hundred ninety-seven million, seven hundred seventy-nine thousand, three hundred seventy-six".