247055821206 has 8 divisors (see below), whose sum is σ = 494111642424. Its totient is φ = 82351940400.

The previous prime is 247055821147. The next prime is 247055821223. The reversal of 247055821206 is 602128550742.

247055821206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

247055821206 is an admirable number.

It is a super-2 number, since 2×247055821206² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 20587985095 + ... + 20587985106.

It is an arithmetic number, because the mean of its divisors is an integer number (61763955303).

Almost surely, 2^247055821206 is an apocalyptic number.

247055821206 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.

247055821206 is a wasteful number, since it uses less digits than its factorization.

247055821206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41175970206.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 247055821206 in words is "two hundred forty-seven billion, fifty-five million, eight hundred twenty-one thousand, two hundred six".