16440809730 has 16 divisors (see below), whose sum is σ = 39457943424. Its totient is φ = 4384215920.

The previous prime is 16440809729. The next prime is 16440809779. The reversal of 16440809730 is 3790804461.

It is a super-3 number, since 3×16440809730³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274013466 + ... + 274013525.

It is an arithmetic number, because the mean of its divisors is an integer number (2466121464).

Almost surely, 2^16440809730 is an apocalyptic number.

16440809730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16440809730 is an abundant number, since it is smaller than the sum of its proper divisors (23017133694).

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

16440809730 is a wasteful number, since it uses less digits than its factorization.

16440809730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548027001.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 16440809730 in words is "sixteen billion, four hundred forty million, eight hundred nine thousand, seven hundred thirty".