13649695016 has 16 divisors (see below), whose sum is σ = 25633114740. Its totient is φ = 6814197760.

The previous prime is 13649695013. The next prime is 13649695027. The reversal of 13649695016 is 61059694631.

It can be written as a sum of positive squares in 2 ways, for example, as 11245754116 + 2403940900 = 106046^2 + 49030^2 .

It is not an unprimeable number, because it can be changed into a prime (13649695013) 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, 1325771 + ... + 1336026.

Almost surely, 2^13649695016 is an apocalyptic number.

It is an amenable number.

13649695016 is a deficient number, since it is larger than the sum of its proper divisors (11983419724).

13649695016 is a wasteful number, since it uses less digits than its factorization.

13649695016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662444 (or 2662440 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 13649695016 in words is "thirteen billion, six hundred forty-nine million, six hundred ninety-five thousand, sixteen".