21434232104 has 16 divisors (see below), whose sum is σ = 40789024800. Its totient is φ = 10557158832.

The previous prime is 21434232067. The next prime is 21434232121. The reversal of 21434232104 is 40123243412.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19994084 + ... + 19995155.

It is an arithmetic number, because the mean of its divisors is an integer number (2549314050).

Almost surely, 2^21434232104 is an apocalyptic number.

It is an amenable number.

21434232104 is a deficient number, since it is larger than the sum of its proper divisors (19354792696).

21434232104 is a wasteful number, since it uses less digits than its factorization.

21434232104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39989312 (or 39989308 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21434232104 its reverse (40123243412), we get a palindrome (61557475516).

The spelling of 21434232104 in words is "twenty-one billion, four hundred thirty-four million, two hundred thirty-two thousand, one hundred four".