13853514645 has 40 divisors (see below), whose sum is σ = 25132970016. Its totient is φ = 7299504864.

The previous prime is 13853514643. The next prime is 13853514671. The reversal of 13853514645 is 54641535831.

13853514645 is a `hidden beast` number, since 1 + 38 + 535 + 1 + 46 + 45 = 666.

It is not a de Polignac number, because 13853514645 - 2¹ = 13853514643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13853514645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13853514643) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 172447 + ... + 239676.

Almost surely, 2^13853514645 is an apocalyptic number.

13853514645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13853514645 is a deficient number, since it is larger than the sum of its proper divisors (11279455371).

13853514645 is an equidigital number, since it uses as much as digits as its factorization.

13853514645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412223 (or 412214 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 13853514645 in words is "thirteen billion, eight hundred fifty-three million, five hundred fourteen thousand, six hundred forty-five".