13887165770 has 8 divisors (see below), whose sum is σ = 24996898404. Its totient is φ = 5554866304.

The previous prime is 13887165763. The next prime is 13887165779. The reversal of 13887165770 is 7756178831.

It can be written as a sum of positive squares in 2 ways, for example, as 13727168569 + 159997201 = 117163^2 + 12649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13887165779) 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, 694358279 + ... + 694358298.

Almost surely, 2^13887165770 is an apocalyptic number.

13887165770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13887165770 is a deficient number, since it is larger than the sum of its proper divisors (11109732634).

13887165770 is a wasteful number, since it uses less digits than its factorization.

13887165770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388716584.

The product of its (nonzero) digits is 1975680, while the sum is 53.

The spelling of 13887165770 in words is "thirteen billion, eight hundred eighty-seven million, one hundred sixty-five thousand, seven hundred seventy".