206250244781 has 32 divisors (see below), whose sum is σ = 251569152000. Its totient is φ = 168704455920.

The previous prime is 206250244777. The next prime is 206250244801. The reversal of 206250244781 is 187442052602.

It is a happy number.

206250244781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206250244781 - 2² = 206250244777 is a prime.

It is a super-2 number, since 2×206250244781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206250244481) 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 in 31 ways as a sum of consecutive naturals, for example, 3369830 + ... + 3430488.

It is an arithmetic number, because the mean of its divisors is an integer number (7861536000).

Almost surely, 2^206250244781 is an apocalyptic number.

It is an amenable number.

206250244781 is a deficient number, since it is larger than the sum of its proper divisors (45318907219).

206250244781 is an equidigital number, since it uses as much as digits as its factorization.

206250244781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61134 (or 61120 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 206250244781 in words is "two hundred six billion, two hundred fifty million, two hundred forty-four thousand, seven hundred eighty-one".