208282646728061 has 4 divisors (see below), whose sum is σ = 208337156715324. Its totient is φ = 208228136740800.

The previous prime is 208282646728049. The next prime is 208282646728067. The reversal of 208282646728061 is 160827646282802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 195362259612025 + 12920387116036 = 13977205^2 + 3594494^2 .

It is a cyclic number.

It is not a de Polignac number, because 208282646728061 - 2¹⁴ = 208282646711677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208282646727985 and 208282646728003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208282646728067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27254987900 + ... + 27254995541.

It is an arithmetic number, because the mean of its divisors is an integer number (52084289178831).

Almost surely, 2^{208282646728061} is an apocalyptic number.

It is an amenable number.

208282646728061 is a deficient number, since it is larger than the sum of its proper divisors (54509987263).

208282646728061 is an equidigital number, since it uses as much as digits as its factorization.

208282646728061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54509987262.

The product of its (nonzero) digits is 49545216, while the sum is 62.

The spelling of 208282646728061 in words is "two hundred eight trillion, two hundred eighty-two billion, six hundred forty-six million, seven hundred twenty-eight thousand, sixty-one".