216423320404 has 24 divisors (see below), whose sum is σ = 385621902848. Its totient is φ = 106255955520.

The previous prime is 216423320327. The next prime is 216423320461. The reversal of 216423320404 is 404023324612.

It is a super-2 number, since 2×216423320404² (a number of 23 digits) contains 22 as substring.

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, 1206132 + ... + 1373899.

Almost surely, 2^216423320404 is an apocalyptic number.

It is an amenable number.

216423320404 is a deficient number, since it is larger than the sum of its proper divisors (169198582444).

216423320404 is a wasteful number, since it uses less digits than its factorization.

216423320404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580415 (or 2580413 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 216423320404 in words is "two hundred sixteen billion, four hundred twenty-three million, three hundred twenty thousand, four hundred four".