13845825820 has 24 divisors (see below), whose sum is σ = 29104979904. Its totient is φ = 5532854976.

The previous prime is 13845825817. The next prime is 13845825827. The reversal of 13845825820 is 2852854831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13845825827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321444 + ... + 361963.

It is an arithmetic number, because the mean of its divisors is an integer number (1212707496).

Almost surely, 2^13845825820 is an apocalyptic number.

13845825820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13845825820 is an abundant number, since it is smaller than the sum of its proper divisors (15259154084).

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

13845825820 is a wasteful number, since it uses less digits than its factorization.

13845825820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684429 (or 684427 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 13845825820 in words is "thirteen billion, eight hundred forty-five million, eight hundred twenty-five thousand, eight hundred twenty".