16511112340 has 12 divisors (see below), whose sum is σ = 34673335956. Its totient is φ = 6604444928.

The previous prime is 16511112311. The next prime is 16511112377. The reversal of 16511112340 is 4321111561.

It can be written as a sum of positive squares in 2 ways, for example, as 5258570256 + 11252542084 = 72516^2 + 106078^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412777789 + ... + 412777828.

It is an arithmetic number, because the mean of its divisors is an integer number (2889444663).

Almost surely, 2^16511112340 is an apocalyptic number.

16511112340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16511112340 is an abundant number, since it is smaller than the sum of its proper divisors (18162223616).

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

16511112340 is a wasteful number, since it uses less digits than its factorization.

16511112340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825555626 (or 825555624 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 16511112340 in words is "sixteen billion, five hundred eleven million, one hundred twelve thousand, three hundred forty".