1785725608640 has 28 divisors (see below), whose sum is σ = 4252259106336. Its totient is φ = 714290243328.

The previous prime is 1785725608633. The next prime is 1785725608643. The reversal of 1785725608640 is 468065275871.

It is a self number, because there is not a number n which added to its sum of digits gives 1785725608640.

It is not an unprimeable number, because it can be changed into a prime (1785725608643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790195944 + ... + 2790196583.

Almost surely, 2^{1785725608640} is an apocalyptic number.

1785725608640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1785725608640 is an abundant number, since it is smaller than the sum of its proper divisors (2466533497696).

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

1785725608640 is an equidigital number, since it uses as much as digits as its factorization.

1785725608640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580392544 (or 5580392534 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 59.

The spelling of 1785725608640 in words is "one trillion, seven hundred eighty-five billion, seven hundred twenty-five million, six hundred eight thousand, six hundred forty".