354143341521 has 6 divisors (see below), whose sum is σ = 511540382210. Its totient is φ = 236095561008.

The previous prime is 354143341499. The next prime is 354143341549. The reversal of 354143341521 is 125143341453.

354143341521 is a `hidden beast` number, since 3 + 54 + 1 + 43 + 3 + 41 + 521 = 666.

It can be written as a sum of positive squares in only one way, i.e., 260139781521 + 94003560000 = 510039^2 + 306600^2 .

It is not a de Polignac number, because 354143341521 - 2²⁵ = 354109787089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (354143341421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19674630076 + ... + 19674630093.

Almost surely, 2^354143341521 is an apocalyptic number.

It is an amenable number.

354143341521 is a deficient number, since it is larger than the sum of its proper divisors (157397040689).

354143341521 is a wasteful number, since it uses less digits than its factorization.

354143341521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39349260175 (or 39349260172 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

Adding to 354143341521 its reverse (125143341453), we get a palindrome (479286682974).

The spelling of 354143341521 in words is "three hundred fifty-four billion, one hundred forty-three million, three hundred forty-one thousand, five hundred twenty-one".