16356433440 has 192 divisors, whose sum is σ = 53996544000. Its totient is φ = 4153949184.

The previous prime is 16356433393. The next prime is 16356433459. The reversal of 16356433440 is 4433465361.

It is an unprimeable number.

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, 2635461 + ... + 2641659.

It is an arithmetic number, because the mean of its divisors is an integer number (281232000).

Almost surely, 2^16356433440 is an apocalyptic number.

16356433440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16356433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26998272000).

16356433440 is an abundant number, since it is smaller than the sum of its proper divisors (37640110560).

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

16356433440 is a wasteful number, since it uses less digits than its factorization.

16356433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479 (or 6471 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

The spelling of 16356433440 in words is "sixteen billion, three hundred fifty-six million, four hundred thirty-three thousand, four hundred forty".