21302366404 has 24 divisors (see below), whose sum is σ = 40978609056. Its totient is φ = 9608976000.

The previous prime is 21302366377. The next prime is 21302366413. The reversal of 21302366404 is 40466320312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842117 + ... + 1853644.

It is an arithmetic number, because the mean of its divisors is an integer number (1707442044).

Almost surely, 2^21302366404 is an apocalyptic number.

It is an amenable number.

21302366404 is a deficient number, since it is larger than the sum of its proper divisors (19676242652).

21302366404 is a wasteful number, since it uses less digits than its factorization.

21302366404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695907 (or 3695905 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 21302366404 its reverse (40466320312), we get a palindrome (61768686716).

The spelling of 21302366404 in words is "twenty-one billion, three hundred two million, three hundred sixty-six thousand, four hundred four".