1791291291997 has 8 divisors (see below), whose sum is σ = 1792584090144. Its totient is φ = 1789998722928.

The previous prime is 1791291291967. The next prime is 1791291292009. The reversal of 1791291291997 is 7991921921971.

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

It is a cyclic number.

It is not a de Polignac number, because 1791291291997 - 2¹⁵ = 1791291259229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1791291291967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17503258 + ... + 17605300.

It is an arithmetic number, because the mean of its divisors is an integer number (224073011268).

Almost surely, 2^{1791291291997} is an apocalyptic number.

It is an amenable number.

1791291291997 is a deficient number, since it is larger than the sum of its proper divisors (1292798147).

1791291291997 is a wasteful number, since it uses less digits than its factorization.

1791291291997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114539.

The product of its digits is 11573604, while the sum is 67.

The spelling of 1791291291997 in words is "one trillion, seven hundred ninety-one billion, two hundred ninety-one million, two hundred ninety-one thousand, nine hundred ninety-seven".