1709143040920 has 64 divisors (see below), whose sum is σ = 4513721417280. Its totient is φ = 570154277376.

The previous prime is 1709143040909. The next prime is 1709143040947. The reversal of 1709143040920 is 290403419071.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82477239 + ... + 82497958.

It is an arithmetic number, because the mean of its divisors is an integer number (70526897145).

Almost surely, 2^{1709143040920} is an apocalyptic number.

1709143040920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1709143040920 is an abundant number, since it is smaller than the sum of its proper divisors (2804578376360).

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

1709143040920 is a wasteful number, since it uses less digits than its factorization.

1709143040920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164975252 (or 164975248 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

Adding to 1709143040920 its reverse (290403419071), we get a palindrome (1999546459991).

The spelling of 1709143040920 in words is "one trillion, seven hundred nine billion, one hundred forty-three million, forty thousand, nine hundred twenty".