16651161140 has 12 divisors (see below), whose sum is σ = 34967438436. Its totient is φ = 6660464448.

The previous prime is 16651161133. The next prime is 16651161179. The reversal of 16651161140 is 4116115661.

16651161140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11463128356 + 5188032784 = 107066^2 + 72028^2 .

It is a super-2 number, since 2×16651161140² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16651161097 and 16651161106.

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 3 ways as a sum of consecutive naturals, for example, 416279009 + ... + 416279048.

It is an arithmetic number, because the mean of its divisors is an integer number (2913953203).

Almost surely, 2^16651161140 is an apocalyptic number.

16651161140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16651161140 is an abundant number, since it is smaller than the sum of its proper divisors (18316277296).

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

16651161140 is a wasteful number, since it uses less digits than its factorization.

16651161140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832558066 (or 832558064 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

It can be divided in two parts, 16 and 651161140, that added together give a palindrome (651161156).

The spelling of 16651161140 in words is "sixteen billion, six hundred fifty-one million, one hundred sixty-one thousand, one hundred forty".