21416421662 has 8 divisors (see below), whose sum is σ = 32808135456. Its totient is φ = 10480376512.

The previous prime is 21416421661. The next prime is 21416421673. The reversal of 21416421662 is 26612461412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21416421661) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 113917043 + ... + 113917230.

It is an arithmetic number, because the mean of its divisors is an integer number (4101016932).

Almost surely, 2^21416421662 is an apocalyptic number.

21416421662 is a deficient number, since it is larger than the sum of its proper divisors (11391713794).

21416421662 is a wasteful number, since it uses less digits than its factorization.

21416421662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227834322.

The product of its digits is 27648, while the sum is 35.

The spelling of 21416421662 in words is "twenty-one billion, four hundred sixteen million, four hundred twenty-one thousand, six hundred sixty-two".