16353217404 has 18 divisors (see below), whose sum is σ = 41337299640. Its totient is φ = 5451072456.

The previous prime is 16353217399. The next prime is 16353217423. The reversal of 16353217404 is 40471235361.

16353217404 is a `hidden beast` number, since 1 + 6 + 35 + 3 + 217 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 454256039 = 16353217404 / (1 + 6 + 3 + 5 + 3 + 2 + 1 + 7 + 4 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227127984 + ... + 227128055.

Almost surely, 2^16353217404 is an apocalyptic number.

It is an amenable number.

16353217404 is an abundant number, since it is smaller than the sum of its proper divisors (24984082236).

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

16353217404 is a wasteful number, since it uses less digits than its factorization.

16353217404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454256049 (or 454256044 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 16353217404 in words is "sixteen billion, three hundred fifty-three million, two hundred seventeen thousand, four hundred four".