13565452068 has 144 divisors (see below), whose sum is σ = 40516869120. Its totient is φ = 3744921600.

The previous prime is 13565452067. The next prime is 13565452091. The reversal of 13565452068 is 86025456531.

13565452068 is a `hidden beast` number, since 1 + 3 + 5 + 65 + 4 + 520 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (13565452067) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7881448 + ... + 7883168.

Almost surely, 2^13565452068 is an apocalyptic number.

13565452068 is a gapful number since it is divisible by the number (18) 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 13565452068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20258434560).

13565452068 is an abundant number, since it is smaller than the sum of its proper divisors (26951417052).

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

13565452068 is a wasteful number, since it uses less digits than its factorization.

13565452068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778 (or 2773 counting only the distinct ones).

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

The spelling of 13565452068 in words is "thirteen billion, five hundred sixty-five million, four hundred fifty-two thousand, sixty-eight".