16404345361 has 16 divisors (see below), whose sum is σ = 17844784128. Its totient is φ = 15034536000.

The previous prime is 16404345341. The next prime is 16404345379. The reversal of 16404345361 is 16354340461.

It is a cyclic number.

It is not a de Polignac number, because 16404345361 - 2¹¹ = 16404343313 is a prime.

It is a super-3 number, since 3×16404345361³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16404345361.

It is not an unprimeable number, because it can be changed into a prime (16404345341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41886 + ... + 185911.

It is an arithmetic number, because the mean of its divisors is an integer number (1115299008).

Almost surely, 2^16404345361 is an apocalyptic number.

It is an amenable number.

16404345361 is a deficient number, since it is larger than the sum of its proper divisors (1440438767).

16404345361 is a wasteful number, since it uses less digits than its factorization.

16404345361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227952.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 16404345361 in words is "sixteen billion, four hundred four million, three hundred forty-five thousand, three hundred sixty-one".