13805705652 has 12 divisors (see below), whose sum is σ = 32213313216. Its totient is φ = 4601901880.

The previous prime is 13805705629. The next prime is 13805705659. The reversal of 13805705652 is 25650750831.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13805705659) 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, 575237724 + ... + 575237747.

It is an arithmetic number, because the mean of its divisors is an integer number (2684442768).

Almost surely, 2^13805705652 is an apocalyptic number.

13805705652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13805705652 is an abundant number, since it is smaller than the sum of its proper divisors (18407607564).

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

13805705652 is a wasteful number, since it uses less digits than its factorization.

13805705652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150475478 (or 1150475476 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 13805705652 in words is "thirteen billion, eight hundred five million, seven hundred five thousand, six hundred fifty-two".