1205242106646 has 8 divisors (see below), whose sum is σ = 2410484213304. Its totient is φ = 401747368880.

The previous prime is 1205242106639. The next prime is 1205242106659. The reversal of 1205242106646 is 6466012425021.

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

1205242106646 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 100436842215 + ... + 100436842226.

It is an arithmetic number, because the mean of its divisors is an integer number (301310526663).

Almost surely, 2^{1205242106646} is an apocalyptic number.

1205242106646 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.

1205242106646 is a wasteful number, since it uses less digits than its factorization.

1205242106646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200873684446.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 1205242106646 in words is "one trillion, two hundred five billion, two hundred forty-two million, one hundred six thousand, six hundred forty-six".