1716216780 has 96 divisors (see below), whose sum is σ = 4903879680. Its totient is φ = 448335360.

The previous prime is 1716216779. The next prime is 1716216809. The reversal of 1716216780 is 876126171.

1716216780 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1298520 + ... + 1299840.

It is an arithmetic number, because the mean of its divisors is an integer number (51082080).

Almost surely, 2^1716216780 is an apocalyptic number.

1716216780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1716216780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2451939840).

1716216780 is an abundant number, since it is smaller than the sum of its proper divisors (3187662900).

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

1716216780 is a wasteful number, since it uses less digits than its factorization.

1716216780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 1716216780 is about 41427.2468310410. The cubic root of 1716216780 is about 1197.2661793613.

The spelling of 1716216780 in words is "one billion, seven hundred sixteen million, two hundred sixteen thousand, seven hundred eighty".