205079968398 has 16 divisors (see below), whose sum is σ = 417898804176. Its totient is φ = 67070178240.

The previous prime is 205079968397. The next prime is 205079968439. The reversal of 205079968398 is 893869970502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205079968397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322452463 + ... + 322453098.

It is an arithmetic number, because the mean of its divisors is an integer number (26118675261).

Almost surely, 2^205079968398 is an apocalyptic number.

205079968398 is an abundant number, since it is smaller than the sum of its proper divisors (212818835778).

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

205079968398 is a wasteful number, since it uses less digits than its factorization.

205079968398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644905619.

The product of its (nonzero) digits is 58786560, while the sum is 66.

The spelling of 205079968398 in words is "two hundred five billion, seventy-nine million, nine hundred sixty-eight thousand, three hundred ninety-eight".