21004411414 has 16 divisors (see below), whose sum is σ = 36151024896. Its totient is φ = 8966025000.

The previous prime is 21004411381. The next prime is 21004411427. The reversal of 21004411414 is 41411440012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2985162 + ... + 2992189.

It is an arithmetic number, because the mean of its divisors is an integer number (2259439056).

Almost surely, 2^21004411414 is an apocalyptic number.

21004411414 is a deficient number, since it is larger than the sum of its proper divisors (15146613482).

21004411414 is a wasteful number, since it uses less digits than its factorization.

21004411414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977611.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21004411414 its reverse (41411440012), we get a palindrome (62415851426).

The spelling of 21004411414 in words is "twenty-one billion, four million, four hundred eleven thousand, four hundred fourteen".