1781346380716 has 48 divisors (see below), whose sum is σ = 3572164556800. Its totient is φ = 761405298048.

The previous prime is 1781346380707. The next prime is 1781346380747. The reversal of 1781346380716 is 6170836431871.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64793125 + ... + 64820611.

Almost surely, 2^{1781346380716} is an apocalyptic number.

It is an amenable number.

1781346380716 is an abundant number, since it is smaller than the sum of its proper divisors (1790818176084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1781346380716 is a wasteful number, since it uses less digits than its factorization.

1781346380716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33566 (or 33564 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 1781346380716 in words is "one trillion, seven hundred eighty-one billion, three hundred forty-six million, three hundred eighty thousand, seven hundred sixteen".