21641541101042 has 8 divisors (see below), whose sum is σ = 32475775910832. Its totient is φ = 10816282464100.

The previous prime is 21641541101029. The next prime is 21641541101051. The reversal of 21641541101042 is 24010114514612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2244037184 + ... + 2244046827.

It is an arithmetic number, because the mean of its divisors is an integer number (4059471988854).

Almost surely, 2^{21641541101042} is an apocalyptic number.

21641541101042 is a deficient number, since it is larger than the sum of its proper divisors (10834234809790).

21641541101042 is a wasteful number, since it uses less digits than its factorization.

21641541101042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4488086424.

The product of its (nonzero) digits is 7680, while the sum is 32.

Adding to 21641541101042 its reverse (24010114514612), we get a palindrome (45651655615654).

The spelling of 21641541101042 in words is "twenty-one trillion, six hundred forty-one billion, five hundred forty-one million, one hundred one thousand, forty-two".