21604212403160 has 32 divisors (see below), whose sum is σ = 48881039252400. Its totient is φ = 8593407388800.

The previous prime is 21604212403157. The next prime is 21604212403199. The reversal of 21604212403160 is 6130421240612.

It is a congruent number.

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, 1508666891 + ... + 1508681210.

Almost surely, 2^{21604212403160} is an apocalyptic number.

21604212403160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21604212403160 is an abundant number, since it is smaller than the sum of its proper divisors (27276826849240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21604212403160 is a wasteful number, since it uses less digits than its factorization.

21604212403160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017348291 (or 3017348287 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 21604212403160 its reverse (6130421240612), we get a palindrome (27734633643772).

The spelling of 21604212403160 in words is "twenty-one trillion, six hundred four billion, two hundred twelve million, four hundred three thousand, one hundred sixty".