21140216562 has 16 divisors (see below), whose sum is σ = 42815629440. Its totient is φ = 6957539472.

The previous prime is 21140216521. The next prime is 21140216597. The reversal of 21140216562 is 26561204112.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22299333 + ... + 22300280.

It is an arithmetic number, because the mean of its divisors is an integer number (2675976840).

Almost surely, 2^21140216562 is an apocalyptic number.

21140216562 is an abundant number, since it is smaller than the sum of its proper divisors (21675412878).

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

21140216562 is a wasteful number, since it uses less digits than its factorization.

21140216562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44599697.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 21140216562 in words is "twenty-one billion, one hundred forty million, two hundred sixteen thousand, five hundred sixty-two".