13887752571 has 48 divisors (see below), whose sum is σ = 25190081280. Its totient is φ = 7162464960.

The previous prime is 13887752561. The next prime is 13887752573. The reversal of 13887752571 is 17525778831.

13887752571 is a `hidden beast` number, since 1 + 38 + 87 + 7 + 525 + 7 + 1 = 666.

It is not a de Polignac number, because 13887752571 - 2⁵ = 13887752539 is a prime.

It is a super-2 number, since 2×13887752571² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13887752573) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24241 + ... + 168413.

It is an arithmetic number, because the mean of its divisors is an integer number (524793360).

Almost surely, 2^13887752571 is an apocalyptic number.

13887752571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13887752571 is a deficient number, since it is larger than the sum of its proper divisors (11302328709).

13887752571 is a wasteful number, since it uses less digits than its factorization.

13887752571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144336 (or 144333 counting only the distinct ones).

The product of its digits is 3292800, while the sum is 54.

The spelling of 13887752571 in words is "thirteen billion, eight hundred eighty-seven million, seven hundred fifty-two thousand, five hundred seventy-one".