21662244134 has 4 divisors (see below), whose sum is σ = 32493366204. Its totient is φ = 10831122066.

The previous prime is 21662244113. The next prime is 21662244209. The reversal of 21662244134 is 43144226612.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21662244094 and 21662244103.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5415561032 + ... + 5415561035.

It is an arithmetic number, because the mean of its divisors is an integer number (8123341551).

Almost surely, 2^21662244134 is an apocalyptic number.

21662244134 is a deficient number, since it is larger than the sum of its proper divisors (10831122070).

21662244134 is a wasteful number, since it uses less digits than its factorization.

21662244134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10831122069.

The product of its digits is 55296, while the sum is 35.

The spelling of 21662244134 in words is "twenty-one billion, six hundred sixty-two million, two hundred forty-four thousand, one hundred thirty-four".