21416233054 has 4 divisors (see below), whose sum is σ = 32124349584. Its totient is φ = 10708116526.

The previous prime is 21416233049. The next prime is 21416233073. The reversal of 21416233054 is 45033261412.

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

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, 5354058262 + ... + 5354058265.

It is an arithmetic number, because the mean of its divisors is an integer number (8031087396).

Almost surely, 2^21416233054 is an apocalyptic number.

21416233054 is a deficient number, since it is larger than the sum of its proper divisors (10708116530).

21416233054 is a wasteful number, since it uses less digits than its factorization.

21416233054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10708116529.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 21416233054 its reverse (45033261412), we get a palindrome (66449494466).

The spelling of 21416233054 in words is "twenty-one billion, four hundred sixteen million, two hundred thirty-three thousand, fifty-four".