13853845512 has 48 divisors (see below), whose sum is σ = 40407052140. Its totient is φ = 4262721408.

The previous prime is 13853845493. The next prime is 13853845517. The reversal of 13853845512 is 21554835831.

13853845512 is a `hidden beast` number, since 1 + 3 + 8 + 53 + 84 + 5 + 512 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13715688996 + 138156516 = 117114^2 + 11754^2 .

It is not an unprimeable number, because it can be changed into a prime (13853845517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7399623 + ... + 7401494.

Almost surely, 2^13853845512 is an apocalyptic number.

13853845512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13853845512 is an abundant number, since it is smaller than the sum of its proper divisors (26553206628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13853845512 is a wasteful number, since it uses less digits than its factorization.

13853845512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14801142 (or 14801135 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The spelling of 13853845512 in words is "thirteen billion, eight hundred fifty-three million, eight hundred forty-five thousand, five hundred twelve".