13698616449 has 24 divisors (see below), whose sum is σ = 21821081088. Its totient is φ = 7616216160.

The previous prime is 13698616441. The next prime is 13698616469. The reversal of 13698616449 is 94461689631.

It is not a de Polignac number, because 13698616449 - 2³ = 13698616441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13698616441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1253857 + ... + 1264734.

It is an arithmetic number, because the mean of its divisors is an integer number (909211712).

Almost surely, 2^13698616449 is an apocalyptic number.

It is an amenable number.

13698616449 is a deficient number, since it is larger than the sum of its proper divisors (8122464639).

13698616449 is a wasteful number, since it uses less digits than its factorization.

13698616449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518645 (or 2518638 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The spelling of 13698616449 in words is "thirteen billion, six hundred ninety-eight million, six hundred sixteen thousand, four hundred forty-nine".