13639884417 has 6 divisors (see below), whose sum is σ = 19702055282. Its totient is φ = 9093256272.

The previous prime is 13639884371. The next prime is 13639884449. The reversal of 13639884417 is 71448893631.

13639884417 is a `hidden beast` number, since 1 + 3 + 63 + 98 + 84 + 417 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10128610881 + 3511273536 = 100641^2 + 59256^2 .

It is not a de Polignac number, because 13639884417 - 2⁶ = 13639884353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13639888417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 757771348 + ... + 757771365.

Almost surely, 2^13639884417 is an apocalyptic number.

It is an amenable number.

13639884417 is a deficient number, since it is larger than the sum of its proper divisors (6062170865).

13639884417 is a wasteful number, since it uses less digits than its factorization.

13639884417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515542719 (or 1515542716 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 13639884417 in words is "thirteen billion, six hundred thirty-nine million, eight hundred eighty-four thousand, four hundred seventeen".