21304798444 has 6 divisors (see below), whose sum is σ = 37283397284. Its totient is φ = 10652399220.

The previous prime is 21304798433. The next prime is 21304798483. The reversal of 21304798444 is 44489740312.

It is a super-3 number, since 3×21304798444³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21304798394 and 21304798403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2663099802 + ... + 2663099809.

Almost surely, 2^21304798444 is an apocalyptic number.

It is an amenable number.

21304798444 is a deficient number, since it is larger than the sum of its proper divisors (15978598840).

21304798444 is a wasteful number, since it uses less digits than its factorization.

21304798444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326199615 (or 5326199613 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 21304798444 in words is "twenty-one billion, three hundred four million, seven hundred ninety-eight thousand, four hundred forty-four".