16765782116 has 6 divisors (see below), whose sum is σ = 29340118710. Its totient is φ = 8382891056.

The previous prime is 16765782101. The next prime is 16765782119. The reversal of 16765782116 is 61128756761.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15950679616 + 815102500 = 126296^2 + 28550^2 .

It is a super-2 number, since 2×16765782116² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16765782119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2095722761 + ... + 2095722768.

It is an arithmetic number, because the mean of its divisors is an integer number (4890019785).

Almost surely, 2^16765782116 is an apocalyptic number.

It is an amenable number.

16765782116 is a deficient number, since it is larger than the sum of its proper divisors (12574336594).

16765782116 is a wasteful number, since it uses less digits than its factorization.

16765782116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191445533 (or 4191445531 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The spelling of 16765782116 in words is "sixteen billion, seven hundred sixty-five million, seven hundred eighty-two thousand, one hundred sixteen".