354505923217 has 8 divisors (see below), whose sum is σ = 376970200776. Its totient is φ = 332220644352.

The previous prime is 354505923203. The next prime is 354505923257. The reversal of 354505923217 is 712329505453.

It is a Cunningham number, because it is equal to 595404²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 71993475856 + 282512447361 = 268316^2 + 531519^2 .

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 354505923217 - 2¹¹ = 354505921169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354505923257) 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, 44745588 + ... + 44753509.

It is an arithmetic number, because the mean of its divisors is an integer number (47121275097).

Almost surely, 2^354505923217 is an apocalyptic number.

It is an amenable number.

354505923217 is a deficient number, since it is larger than the sum of its proper divisors (22464277559).

354505923217 is a wasteful number, since it uses less digits than its factorization.

354505923217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89499347.

The product of its (nonzero) digits is 1134000, while the sum is 46.

The spelling of 354505923217 in words is "three hundred fifty-four billion, five hundred five million, nine hundred twenty-three thousand, two hundred seventeen".