13888762641 has 12 divisors (see below), whose sum is σ = 21604742068. Its totient is φ = 8546930784.

The previous prime is 13888762639. The next prime is 13888762651. The reversal of 13888762641 is 14626788831.

13888762641 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 8 + 7 + 626 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3071930625 + 10816832016 = 55425^2 + 104004^2 .

It is not a de Polignac number, because 13888762641 - 2¹ = 13888762639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13888762651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59353570 + ... + 59353803.

Almost surely, 2^13888762641 is an apocalyptic number.

It is an amenable number.

13888762641 is a deficient number, since it is larger than the sum of its proper divisors (7715979427).

13888762641 is a wasteful number, since it uses less digits than its factorization.

13888762641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118707392 (or 118707389 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The spelling of 13888762641 in words is "thirteen billion, eight hundred eighty-eight million, seven hundred sixty-two thousand, six hundred forty-one".