16115286916 has 9 divisors (see below), whose sum is σ = 28202196421. Its totient is φ = 8057516512.

The previous prime is 16115286899. The next prime is 16115286917. The reversal of 16115286916 is 61968251161.

The square root of 16115286916 is 126946.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3771188100 + 12344098816 = 61410^2 + 111104^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16115286917) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 222156 + ... + 285628.

Almost surely, 2^16115286916 is an apocalyptic number.

16115286916 is the 126946-th square number.

It is an amenable number.

16115286916 is a deficient number, since it is larger than the sum of its proper divisors (12086909505).

16115286916 is an frugal number, since it uses more digits than its factorization.

16115286916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126950 (or 63475 counting only the distinct ones).

The product of its digits is 155520, while the sum is 46.

It can be divided in two parts, 16115 and 286916, that added together give a triangular number (303031 = T₇₇₈).

The spelling of 16115286916 in words is "sixteen billion, one hundred fifteen million, two hundred eighty-six thousand, nine hundred sixteen".