1782411889896 has 144 divisors (see below), whose sum is σ = 5308491988800. Its totient is φ = 539882608320.

The previous prime is 1782411889879. The next prime is 1782411889897. The reversal of 1782411889896 is 6989881142871.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (1782411889897) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19879615 + ... + 19969073.

It is an arithmetic number, because the mean of its divisors is an integer number (36864527700).

Almost surely, 2^{1782411889896} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1782411889896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2654245994400).

1782411889896 is an abundant number, since it is smaller than the sum of its proper divisors (3526080098904).

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

1782411889896 is a wasteful number, since it uses less digits than its factorization.

1782411889896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91780 (or 91762 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 72.

The spelling of 1782411889896 in words is "one trillion, seven hundred eighty-two billion, four hundred eleven million, eight hundred eighty-nine thousand, eight hundred ninety-six".