13040865852 has 192 divisors, whose sum is σ = 38413541376. Its totient is φ = 3357573120.

The previous prime is 13040865787. The next prime is 13040865853. The reversal of 13040865852 is 25856804031.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040865853) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4292478 + ... + 4295514.

It is an arithmetic number, because the mean of its divisors is an integer number (200070528).

Almost surely, 2^13040865852 is an apocalyptic number.

13040865852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13040865852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19206770688).

13040865852 is an abundant number, since it is smaller than the sum of its proper divisors (25372675524).

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

13040865852 is a wasteful number, since it uses less digits than its factorization.

13040865852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196 (or 3194 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 13040865852 in words is "thirteen billion, forty million, eight hundred sixty-five thousand, eight hundred fifty-two".