2646888016 has 20 divisors (see below), whose sum is σ = 5131085652. Its totient is φ = 1322736896.

The previous prime is 2646887989. The next prime is 2646888017. The reversal of 2646888016 is 6108886462.

It can be written as a sum of positive squares in 2 ways, for example, as 1011494416 + 1635393600 = 31804^2 + 40440^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646888017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12631 + ... + 73846.

Almost surely, 2^2646888016 is an apocalyptic number.

It is an amenable number.

2646888016 is a deficient number, since it is larger than the sum of its proper divisors (2484197636).

2646888016 is a wasteful number, since it uses less digits than its factorization.

2646888016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88398 (or 88392 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 2646888016 is about 51447.9155651616. The cubic root of 2646888016 is about 1383.2855997593.

The spelling of 2646888016 in words is "two billion, six hundred forty-six million, eight hundred eighty-eight thousand, sixteen".