13123856052 has 36 divisors (see below), whose sum is σ = 33357491076. Its totient is φ = 4350447360.

The previous prime is 13123856033. The next prime is 13123856059. The reversal of 13123856052 is 25065832131.

13123856052 is a `hidden beast` number, since 1 + 3 + 12 + 38 + 5 + 605 + 2 = 666.

13123856052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2688007716 + 10435848336 = 51846^2 + 102156^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13123855998 and 13123856016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123856059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1000533 + ... + 1013564.

Almost surely, 2^13123856052 is an apocalyptic number.

13123856052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13123856052 is an abundant number, since it is smaller than the sum of its proper divisors (20233635024).

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

13123856052 is a wasteful number, since it uses less digits than its factorization.

13123856052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014288 (or 2014283 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 13123856052 in words is "thirteen billion, one hundred twenty-three million, eight hundred fifty-six thousand, fifty-two".