205969158438 has 32 divisors (see below), whose sum is σ = 413937907200. Its totient is φ = 68323505376.

The previous prime is 205969158383. The next prime is 205969158457. The reversal of 205969158438 is 834851969502.

It is a Curzon number.

It is a congruent number.

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, 2136828 + ... + 2231136.

It is an arithmetic number, because the mean of its divisors is an integer number (12935559600).

Almost surely, 2^205969158438 is an apocalyptic number.

205969158438 is an abundant number, since it is smaller than the sum of its proper divisors (207968748762).

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

205969158438 is a wasteful number, since it uses less digits than its factorization.

205969158438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96076.

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 205969158438 in words is "two hundred five billion, nine hundred sixty-nine million, one hundred fifty-eight thousand, four hundred thirty-eight".