16405217340 has 48 divisors (see below), whose sum is σ = 45981788832. Its totient is φ = 4370231296.

The previous prime is 16405217333. The next prime is 16405217401. The reversal of 16405217340 is 4371250461.

16405217340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81309 + ... + 198548.

It is an arithmetic number, because the mean of its divisors is an integer number (957953934).

Almost surely, 2^16405217340 is an apocalyptic number.

16405217340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16405217340 is an abundant number, since it is smaller than the sum of its proper divisors (29576571492).

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

16405217340 is a wasteful number, since it uses less digits than its factorization.

16405217340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280846 (or 280844 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The spelling of 16405217340 in words is "sixteen billion, four hundred five million, two hundred seventeen thousand, three hundred forty".