213541435144144 has 40 divisors (see below), whose sum is σ = 441014067433800. Its totient is φ = 99815656992768.

The previous prime is 213541435144133. The next prime is 213541435144181. The reversal of 213541435144144 is 441441534145312.

It can be written as a sum of positive squares in 4 ways, for example, as 3287375124544 + 210254060019600 = 1813112^2 + 14500140^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213541435144094 and 213541435144103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2634452109 + ... + 2634533164.

It is an arithmetic number, because the mean of its divisors is an integer number (11025351685845).

Almost surely, 2^{213541435144144} is an apocalyptic number.

It is an amenable number.

213541435144144 is an abundant number, since it is smaller than the sum of its proper divisors (227472632289656).

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

213541435144144 is a wasteful number, since it uses less digits than its factorization.

213541435144144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268985447 (or 5268985441 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 46.

Adding to 213541435144144 its reverse (441441534145312), we get a palindrome (654982969289456).

The spelling of 213541435144144 in words is "two hundred thirteen trillion, five hundred forty-one billion, four hundred thirty-five million, one hundred forty-four thousand, one hundred forty-four".