208858810028013 has 32 divisors (see below), whose sum is σ = 327660815865600. Its totient is φ = 131033003885568.

The previous prime is 208858810028009. The next prime is 208858810028027. The reversal of 208858810028013 is 310820018858802.

208858810028013 is a `hidden beast` number, since 20 + 8 + 8 + 588 + 1 + 0 + 0 + 28 + 0 + 13 = 666.

It is not a de Polignac number, because 208858810028013 - 2² = 208858810028009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208858810028003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23344081 + ... + 31026822.

It is an arithmetic number, because the mean of its divisors is an integer number (10239400495800).

Almost surely, 2^{208858810028013} is an apocalyptic number.

It is an amenable number.

208858810028013 is a deficient number, since it is larger than the sum of its proper divisors (118802005837587).

208858810028013 is a wasteful number, since it uses less digits than its factorization.

208858810028013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54379298 (or 54379292 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 54.

The spelling of 208858810028013 in words is "two hundred eight trillion, eight hundred fifty-eight billion, eight hundred ten million, twenty-eight thousand, thirteen".