21541163043282 has 16 divisors (see below), whose sum is σ = 43095031030272. Its totient is φ = 7178270190480.

The previous prime is 21541163043259. The next prime is 21541163043307. The reversal of 21541163043282 is 28234036114512.

It is a happy 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, 529350613 + ... + 529391304.

It is an arithmetic number, because the mean of its divisors is an integer number (2693439439392).

Almost surely, 2^{21541163043282} is an apocalyptic number.

21541163043282 is an abundant number, since it is smaller than the sum of its proper divisors (21553867986990).

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

21541163043282 is a wasteful number, since it uses less digits than its factorization.

21541163043282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058745313.

The product of its (nonzero) digits is 276480, while the sum is 42.

Adding to 21541163043282 its reverse (28234036114512), we get a palindrome (49775199157794).

The spelling of 21541163043282 in words is "twenty-one trillion, five hundred forty-one billion, one hundred sixty-three million, forty-three thousand, two hundred eighty-two".