1720674316256 has 48 divisors (see below), whose sum is σ = 3881896802784. Its totient is φ = 735454785024.

The previous prime is 1720674316243. The next prime is 1720674316279. The reversal of 1720674316256 is 6526134760271.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10213475 + ... + 10380578.

It is an arithmetic number, because the mean of its divisors is an integer number (80872850058).

Almost surely, 2^{1720674316256} is an apocalyptic number.

1720674316256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1720674316256 is an abundant number, since it is smaller than the sum of its proper divisors (2161222486528).

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

1720674316256 is a wasteful number, since it uses less digits than its factorization.

1720674316256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20594443 (or 20594435 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 1720674316256 in words is "one trillion, seven hundred twenty billion, six hundred seventy-four million, three hundred sixteen thousand, two hundred fifty-six".