13865330785 has 16 divisors (see below), whose sum is σ = 17186273280. Its totient is φ = 10727478720.

The previous prime is 13865330767. The next prime is 13865330789. The reversal of 13865330785 is 58703356831.

It is a happy number.

It is not a de Polignac number, because 13865330785 - 2¹³ = 13865322593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13865330789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217111 + ... + 273619.

It is an arithmetic number, because the mean of its divisors is an integer number (1074142080).

Almost surely, 2^13865330785 is an apocalyptic number.

It is an amenable number.

13865330785 is a deficient number, since it is larger than the sum of its proper divisors (3320942495).

13865330785 is a wasteful number, since it uses less digits than its factorization.

13865330785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58128.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 13865330785 in words is "thirteen billion, eight hundred sixty-five million, three hundred thirty thousand, seven hundred eighty-five".