1709997818497 has 8 divisors (see below), whose sum is σ = 1790435473344. Its totient is φ = 1630067657328.

The previous prime is 1709997818453. The next prime is 1709997818513. The reversal of 1709997818497 is 7948187999071.

It is a happy number.

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 1709997818497 - 2¹⁵ = 1709997785729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1709997818407) 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, 126866523 + ... + 126880000.

It is an arithmetic number, because the mean of its divisors is an integer number (223804434168).

Almost surely, 2^{1709997818497} is an apocalyptic number.

It is an amenable number.

1709997818497 is a deficient number, since it is larger than the sum of its proper divisors (80437654847).

1709997818497 is a wasteful number, since it uses less digits than its factorization.

1709997818497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253746839.

The product of its (nonzero) digits is 576108288, while the sum is 79.

The spelling of 1709997818497 in words is "one trillion, seven hundred nine billion, nine hundred ninety-seven million, eight hundred eighteen thousand, four hundred ninety-seven".