206142406458 has 8 divisors (see below), whose sum is σ = 412284812928. Its totient is φ = 68714135484.

The previous prime is 206142406417. The next prime is 206142406471. The reversal of 206142406458 is 854604241602.

It is a sphenic number, since it is the product of 3 distinct primes.

206142406458 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17178533866 + ... + 17178533877.

It is an arithmetic number, because the mean of its divisors is an integer number (51535601616).

Almost surely, 2^206142406458 is an apocalyptic number.

206142406458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

206142406458 is a wasteful number, since it uses less digits than its factorization.

206142406458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34357067748.

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 206142406458 in words is "two hundred six billion, one hundred forty-two million, four hundred six thousand, four hundred fifty-eight".