1720613166272 has 224 divisors, whose sum is σ = 4586625523200. Its totient is φ = 618486865920.

The previous prime is 1720613166269. The next prime is 1720613166299. The reversal of 1720613166272 is 2726613160271.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 152274479 + ... + 152285777.

It is an arithmetic number, because the mean of its divisors is an integer number (20476006800).

Almost surely, 2^{1720613166272} 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 1720613166272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2293312761600).

1720613166272 is an abundant number, since it is smaller than the sum of its proper divisors (2866012356928).

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

1720613166272 is a wasteful number, since it uses less digits than its factorization.

1720613166272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13719 (or 13709 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

It can be divided in two parts, 172061 and 3166272, that added together give a palindrome (3338333).

The spelling of 1720613166272 in words is "one trillion, seven hundred twenty billion, six hundred thirteen million, one hundred sixty-six thousand, two hundred seventy-two".