21411432334 has 4 divisors (see below), whose sum is σ = 32117148504. Its totient is φ = 10705716166.

The previous prime is 21411432319. The next prime is 21411432353. The reversal of 21411432334 is 43323411412.

It is a happy number.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 5352858082 + ... + 5352858085.

It is an arithmetic number, because the mean of its divisors is an integer number (8029287126).

Almost surely, 2^21411432334 is an apocalyptic number.

21411432334 is a deficient number, since it is larger than the sum of its proper divisors (10705716170).

21411432334 is a wasteful number, since it uses less digits than its factorization.

21411432334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10705716169.

The product of its digits is 6912, while the sum is 28.

Adding to 21411432334 its reverse (43323411412), we get a palindrome (64734843746).

The spelling of 21411432334 in words is "twenty-one billion, four hundred eleven million, four hundred thirty-two thousand, three hundred thirty-four".