1720685041078 has 8 divisors (see below), whose sum is σ = 2581037376768. Its totient is φ = 860339248824.

The previous prime is 1720685040973. The next prime is 1720685041079. The reversal of 1720685041078 is 8701405860271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720685041079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914901 + ... + 2068432.

It is an arithmetic number, because the mean of its divisors is an integer number (322629672096).

Almost surely, 2^{1720685041078} is an apocalyptic number.

1720685041078 is a deficient number, since it is larger than the sum of its proper divisors (860352335690).

1720685041078 is a wasteful number, since it uses less digits than its factorization.

1720685041078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271718.

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 1720685041078 in words is "one trillion, seven hundred twenty billion, six hundred eighty-five million, forty-one thousand, seventy-eight".