1781996795206 has 8 divisors (see below), whose sum is σ = 2673297628560. Its totient is φ = 890897585688.

The previous prime is 1781996795191. The next prime is 1781996795207. The reversal of 1781996795206 is 6025976991871.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1781996795207) 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, 50383861 + ... + 50419216.

It is an arithmetic number, because the mean of its divisors is an integer number (334162203570).

Almost surely, 2^{1781996795206} is an apocalyptic number.

1781996795206 is a deficient number, since it is larger than the sum of its proper divisors (891300833354).

1781996795206 is a wasteful number, since it uses less digits than its factorization.

1781996795206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100811918.

The product of its (nonzero) digits is 102876480, while the sum is 70.

The spelling of 1781996795206 in words is "one trillion, seven hundred eighty-one billion, nine hundred ninety-six million, seven hundred ninety-five thousand, two hundred six".