208866428313 has 8 divisors (see below), whose sum is σ = 294870251808. Its totient is φ = 131053445184.

The previous prime is 208866428297. The next prime is 208866428321. The reversal of 208866428313 is 313824668802.

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

It is not a de Polignac number, because 208866428313 - 2⁴ = 208866428297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 4095420163 = 208866428313 / (2 + 0 + 8 + 8 + 6 + 6 + 4 + 2 + 8 + 3 + 1 + 3).

It is not an unprimeable number, because it can be changed into a prime (208866428363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047710031 + ... + 2047710132.

It is an arithmetic number, because the mean of its divisors is an integer number (36858781476).

Almost surely, 2^208866428313 is an apocalyptic number.

It is an amenable number.

208866428313 is a deficient number, since it is larger than the sum of its proper divisors (86003823495).

208866428313 is a wasteful number, since it uses less digits than its factorization.

208866428313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095420183.

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 208866428313 in words is "two hundred eight billion, eight hundred sixty-six million, four hundred twenty-eight thousand, three hundred thirteen".