1720067620336 has 80 divisors (see below), whose sum is σ = 3605962641120. Its totient is φ = 790131363840.

The previous prime is 1720067620333. The next prime is 1720067620357. The reversal of 1720067620336 is 6330267600271.

It is a junction number, because it is equal to n+sod(n) for n = 1720067620292 and 1720067620301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720067620333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37664076 + ... + 37709716.

It is an arithmetic number, because the mean of its divisors is an integer number (45074533014).

Almost surely, 2^{1720067620336} is an apocalyptic number.

1720067620336 is a gapful number since it is divisible by the number (16) 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 1720067620336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802981320560).

1720067620336 is an abundant number, since it is smaller than the sum of its proper divisors (1885895020784).

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

1720067620336 is a wasteful number, since it uses less digits than its factorization.

1720067620336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46514 (or 46508 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 1720067620336 in words is "one trillion, seven hundred twenty billion, sixty-seven million, six hundred twenty thousand, three hundred thirty-six".