10206243220646 has 12 divisors (see below), whose sum is σ = 16827648946836. Its totient is φ = 4639201463820.

The previous prime is 10206243220643. The next prime is 10206243220651. The reversal of 10206243220646 is 64602234260201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10206243220643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21087279140 + ... + 21087279623.

It is an arithmetic number, because the mean of its divisors is an integer number (1402304078903).

Almost surely, 2^{10206243220646} is an apocalyptic number.

10206243220646 is a deficient number, since it is larger than the sum of its proper divisors (6621405726190).

10206243220646 is a wasteful number, since it uses less digits than its factorization.

10206243220646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42174558787 (or 42174558776 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 10206243220646 its reverse (64602234260201), we get a palindrome (74808477480847).

The spelling of 10206243220646 in words is "ten trillion, two hundred six billion, two hundred forty-three million, two hundred twenty thousand, six hundred forty-six".