16220016440 has 32 divisors (see below), whose sum is σ = 36498844080. Its totient is φ = 6487329792.

The previous prime is 16220016431. The next prime is 16220016469. The reversal of 16220016440 is 4461002261.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 573512 + ... + 601128.

Almost surely, 2^16220016440 is an apocalyptic number.

16220016440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16220016440 is an abundant number, since it is smaller than the sum of its proper divisors (20278827640).

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

16220016440 is a wasteful number, since it uses less digits than its factorization.

16220016440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42311 (or 42307 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 16220016440 in words is "sixteen billion, two hundred twenty million, sixteen thousand, four hundred forty".