208747866902 has 4 divisors (see below), whose sum is σ = 313121800356. Its totient is φ = 104373933450.

The previous prime is 208747866883. The next prime is 208747866907. The reversal of 208747866902 is 209668747802.

208747866902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×208747866902² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208747866907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52186966724 + ... + 52186966727.

It is an arithmetic number, because the mean of its divisors is an integer number (78280450089).

Almost surely, 2^208747866902 is an apocalyptic number.

208747866902 is a deficient number, since it is larger than the sum of its proper divisors (104373933454).

208747866902 is a wasteful number, since it uses less digits than its factorization.

208747866902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104373933453.

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 208747866902 in words is "two hundred eight billion, seven hundred forty-seven million, eight hundred sixty-six thousand, nine hundred two".