1797420247143 has 16 divisors (see below), whose sum is σ = 2468576658912. Its totient is φ = 1162594944000.

The previous prime is 1797420247123. The next prime is 1797420247193. The reversal of 1797420247143 is 3417420247971.

It is not a de Polignac number, because 1797420247143 - 2⁶ = 1797420247079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1797420247123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40345618 + ... + 40390143.

It is an arithmetic number, because the mean of its divisors is an integer number (154286041182).

Almost surely, 2^{1797420247143} is an apocalyptic number.

1797420247143 is a deficient number, since it is larger than the sum of its proper divisors (671156411769).

1797420247143 is a wasteful number, since it uses less digits than its factorization.

1797420247143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80735986.

The product of its (nonzero) digits is 2370816, while the sum is 51.

The spelling of 1797420247143 in words is "one trillion, seven hundred ninety-seven billion, four hundred twenty million, two hundred forty-seven thousand, one hundred forty-three".