16550439907 has 16 divisors (see below), whose sum is σ = 16974156640. Its totient is φ = 16132089600.

The previous prime is 16550439901. The next prime is 16550439937. The reversal of 16550439907 is 70993405561.

It is a cyclic number.

It is not a de Polignac number, because 16550439907 - 2⁷ = 16550439779 is a prime.

It is a super-2 number, since 2×16550439907² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16550439901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5603143 + ... + 5606095.

It is an arithmetic number, because the mean of its divisors is an integer number (1060884790).

Almost surely, 2^16550439907 is an apocalyptic number.

16550439907 is a deficient number, since it is larger than the sum of its proper divisors (423716733).

16550439907 is a wasteful number, since it uses less digits than its factorization.

16550439907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The spelling of 16550439907 in words is "sixteen billion, five hundred fifty million, four hundred thirty-nine thousand, nine hundred seven".