171204790459 has 16 divisors (see below), whose sum is σ = 184994409600. Its totient is φ = 157861592064.

The previous prime is 171204790453. The next prime is 171204790469. The reversal of 171204790459 is 954097402171.

It is a cyclic number.

It is not a de Polignac number, because 171204790459 - 2¹⁷ = 171204659387 is a prime.

It is a super-2 number, since 2×171204790459² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171204790453) 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, 354147 + ... + 683980.

It is an arithmetic number, because the mean of its divisors is an integer number (11562150600).

Almost surely, 2^171204790459 is an apocalyptic number.

171204790459 is a deficient number, since it is larger than the sum of its proper divisors (13789619141).

171204790459 is a wasteful number, since it uses less digits than its factorization.

171204790459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038342.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 171204790459 in words is "one hundred seventy-one billion, two hundred four million, seven hundred ninety thousand, four hundred fifty-nine".