205668982763 has 4 divisors (see below), whose sum is σ = 205686698520. Its totient is φ = 205651267008.

The previous prime is 205668982751. The next prime is 205668982777. The reversal of 205668982763 is 367289866502.

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

It is a cyclic number.

It is not a de Polignac number, because 205668982763 - 2¹² = 205668978667 is a prime.

It is a super-2 number, since 2×205668982763² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205668982696 and 205668982705.

It is not an unprimeable number, because it can be changed into a prime (205668985763) 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, 8840453 + ... + 8863686.

It is an arithmetic number, because the mean of its divisors is an integer number (51421674630).

Almost surely, 2^205668982763 is an apocalyptic number.

205668982763 is a deficient number, since it is larger than the sum of its proper divisors (17715757).

205668982763 is a wasteful number, since it uses less digits than its factorization.

205668982763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17715756.

The product of its (nonzero) digits is 52254720, while the sum is 62.

The spelling of 205668982763 in words is "two hundred five billion, six hundred sixty-eight million, nine hundred eighty-two thousand, seven hundred sixty-three".