13051643652 has 72 divisors (see below), whose sum is σ = 33835844952. Its totient is φ = 4239475200.

The previous prime is 13051643639. The next prime is 13051643701. The reversal of 13051643652 is 25634615031.

13051643652 is a `hidden beast` number, since 1 + 3 + 0 + 5 + 1 + 643 + 6 + 5 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 441252036 + 12610391616 = 21006^2 + 112296^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1384218 + ... + 1393614.

It is an arithmetic number, because the mean of its divisors is an integer number (469942291).

Almost surely, 2^13051643652 is an apocalyptic number.

13051643652 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 13051643652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16917922476).

13051643652 is an abundant number, since it is smaller than the sum of its proper divisors (20784201300).

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

13051643652 is a wasteful number, since it uses less digits than its factorization.

13051643652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10389 (or 10384 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 13051643652 in words is "thirteen billion, fifty-one million, six hundred forty-three thousand, six hundred fifty-two".