1720247045740 has 48 divisors (see below), whose sum is σ = 3659163984000. Its totient is φ = 679218388992.

The previous prime is 1720247045729. The next prime is 1720247045789. The reversal of 1720247045740 is 475407420271.

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, 6262972 + ... + 6531868.

It is an arithmetic number, because the mean of its divisors is an integer number (76232583000).

Almost surely, 2^{1720247045740} is an apocalyptic number.

1720247045740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720247045740 is an abundant number, since it is smaller than the sum of its proper divisors (1938916938260).

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

1720247045740 is a wasteful number, since it uses less digits than its factorization.

1720247045740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273034 (or 273032 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 43.

The spelling of 1720247045740 in words is "one trillion, seven hundred twenty billion, two hundred forty-seven million, forty-five thousand, seven hundred forty".