208376621936836 has 12 divisors (see below), whose sum is σ = 364659822153900. Its totient is φ = 104188101321440.

The previous prime is 208376621936797. The next prime is 208376621936897. The reversal of 208376621936836 is 638639126673802.

It can be written as a sum of positive squares in 2 ways, for example, as 115758017628100 + 92618604308736 = 10759090^2 + 9623856^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50164675 + ... + 54159466.

It is an arithmetic number, because the mean of its divisors is an integer number (30388318512825).

Almost surely, 2^{208376621936836} is an apocalyptic number.

It is an amenable number.

208376621936836 is a deficient number, since it is larger than the sum of its proper divisors (156283200217064).

208376621936836 is a wasteful number, since it uses less digits than its factorization.

208376621936836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104823494 (or 104823492 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 70.

The spelling of 208376621936836 in words is "two hundred eight trillion, three hundred seventy-six billion, six hundred twenty-one million, nine hundred thirty-six thousand, eight hundred thirty-six".