354545135343220 has 48 divisors (see below), whose sum is σ = 815525727161040. Its totient is φ = 128873201321984.

The previous prime is 354545135343187. The next prime is 354545135343239. The reversal of 354545135343220 is 22343531545453.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2362412036196 + 352182723307024 = 1537014^2 + 18766532^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17978952379 + ... + 17978972098.

It is an arithmetic number, because the mean of its divisors is an integer number (16990119315855).

Almost surely, 2^{354545135343220} is an apocalyptic number.

It is an amenable number.

354545135343220 is an abundant number, since it is smaller than the sum of its proper divisors (460980591817820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

354545135343220 is a wasteful number, since it uses less digits than its factorization.

354545135343220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35957924532 (or 35957924530 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 49.

Adding to 354545135343220 its reverse (22343531545453), we get a palindrome (376888666888673).

The spelling of 354545135343220 in words is "three hundred fifty-four trillion, five hundred forty-five billion, one hundred thirty-five million, three hundred forty-three thousand, two hundred twenty".