16404437346 has 64 divisors (see below), whose sum is σ = 36425465856. Its totient is φ = 4883760000.

The previous prime is 16404437339. The next prime is 16404437347. The reversal of 16404437346 is 64373440461.

It is a super-3 number, since 3×16404437346³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16404437298 and 16404437307.

It is not an unprimeable number, because it can be changed into a prime (16404437347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 853846 + ... + 872846.

It is an arithmetic number, because the mean of its divisors is an integer number (569147904).

Almost surely, 2^16404437346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16404437346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18212732928).

16404437346 is an abundant number, since it is smaller than the sum of its proper divisors (20021028510).

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

16404437346 is a wasteful number, since it uses less digits than its factorization.

16404437346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19247.

The product of its (nonzero) digits is 580608, while the sum is 42.

The spelling of 16404437346 in words is "sixteen billion, four hundred four million, four hundred thirty-seven thousand, three hundred forty-six".