16404342426 has 24 divisors (see below), whose sum is σ = 36859140864. Its totient is φ = 5468113980.

The previous prime is 16404342421. The next prime is 16404342431. The reversal of 16404342426 is 62424340461.

16404342426 is a `hidden beast` number, since 1 + 6 + 404 + 3 + 4 + 242 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (16404342421) and next prime (16404342431).

It is not an unprimeable number, because it can be changed into a prime (16404342421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16876410 + ... + 16877381.

It is an arithmetic number, because the mean of its divisors is an integer number (1535797536).

Almost surely, 2^16404342426 is an apocalyptic number.

16404342426 is an abundant number, since it is smaller than the sum of its proper divisors (20454798438).

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

16404342426 is an equidigital number, since it uses as much as digits as its factorization.

16404342426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33753808 (or 33753796 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 16404342426 its reverse (62424340461), we get a palindrome (78828682887).

The spelling of 16404342426 in words is "sixteen billion, four hundred four million, three hundred forty-two thousand, four hundred twenty-six".