1720661200360 has 64 divisors (see below), whose sum is σ = 4030497176400. Its totient is φ = 660298469376.

The previous prime is 1720661200261. The next prime is 1720661200361. The reversal of 1720661200360 is 630021660271.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1203536255364 + 517124944996 = 1097058^2 + 719114^2 .

It is not an unprimeable number, because it can be changed into a prime (1720661200361) 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, 4541857 + ... + 4906096.

Almost surely, 2^{1720661200360} is an apocalyptic number.

1720661200360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720661200360 is an abundant number, since it is smaller than the sum of its proper divisors (2309835976040).

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

1720661200360 is a wasteful number, since it uses less digits than its factorization.

1720661200360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9448150 (or 9448146 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 1720661200360 in words is "one trillion, seven hundred twenty billion, six hundred sixty-one million, two hundred thousand, three hundred sixty".