354505221543 has 32 divisors (see below), whose sum is σ = 526560249600. Its totient is φ = 210333427200.

The previous prime is 354505221533. The next prime is 354505221547. The reversal of 354505221543 is 345122505453.

It is not a de Polignac number, because 354505221543 - 2⁶ = 354505221479 is a prime.

It is a super-2 number, since 2×354505221543² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354505221547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91473 + ... + 846981.

It is an arithmetic number, because the mean of its divisors is an integer number (16455007800).

Almost surely, 2^354505221543 is an apocalyptic number.

354505221543 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

354505221543 is a deficient number, since it is larger than the sum of its proper divisors (172055028057).

354505221543 is a wasteful number, since it uses less digits than its factorization.

354505221543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755823.

The product of its (nonzero) digits is 360000, while the sum is 39.

Adding to 354505221543 its reverse (345122505453), we get a palindrome (699627726996).

The spelling of 354505221543 in words is "three hundred fifty-four billion, five hundred five million, two hundred twenty-one thousand, five hundred forty-three".