354206818181 has 4 divisors (see below), whose sum is σ = 354208668000. Its totient is φ = 354204968364.

The previous prime is 354206818117. The next prime is 354206818201. The reversal of 354206818181 is 181818602453.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 354206818181 - 2⁶ = 354206818117 is a prime.

It is a super-3 number, since 3×354206818181³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354206818481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599531 + ... + 1033368.

It is an arithmetic number, because the mean of its divisors is an integer number (88552167000).

Almost surely, 2^354206818181 is an apocalyptic number.

It is an amenable number.

354206818181 is a deficient number, since it is larger than the sum of its proper divisors (1849819).

354206818181 is a wasteful number, since it uses less digits than its factorization.

354206818181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849818.

The product of its (nonzero) digits is 368640, while the sum is 47.

The spelling of 354206818181 in words is "three hundred fifty-four billion, two hundred six million, eight hundred eighteen thousand, one hundred eighty-one".