16105776818 has 16 divisors (see below), whose sum is σ = 25251595776. Its totient is φ = 7689760320.

The previous prime is 16105776809. The next prime is 16105776851. The reversal of 16105776818 is 81867750161.

It is a happy number.

It is a super-3 number, since 3×16105776818³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 267938 + ... + 322493.

It is an arithmetic number, because the mean of its divisors is an integer number (1578224736).

Almost surely, 2^16105776818 is an apocalyptic number.

16105776818 is a deficient number, since it is larger than the sum of its proper divisors (9145818958).

16105776818 is a wasteful number, since it uses less digits than its factorization.

16105776818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591049.

The product of its (nonzero) digits is 564480, while the sum is 50.

The spelling of 16105776818 in words is "sixteen billion, one hundred five million, seven hundred seventy-six thousand, eight hundred eighteen".