2016956678416 has 15 divisors (see below), whose sum is σ = 3907864570981. Its totient is φ = 1008475498816.

The previous prime is 2016956678393. The next prime is 2016956678417. The reversal of 2016956678416 is 6148766596102.

The square root of 2016956678416 is 1420196.

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., 1993755296016 + 23201382400 = 1412004^2 + 152320^2 .

It is a super-2 number, since 2×2016956678416² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2016956678417) 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, 5503260 + ... + 5858308.

Almost surely, 2^{2016956678416} is an apocalyptic number.

2016956678416 is the 1420196-th square number.

It is an amenable number.

2016956678416 is a deficient number, since it is larger than the sum of its proper divisors (1890907892565).

2016956678416 is an frugal number, since it uses more digits than its factorization.

2016956678416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710106 (or 355051 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 2016956678416 in words is "two trillion, sixteen billion, nine hundred fifty-six million, six hundred seventy-eight thousand, four hundred sixteen".