13066562500 has 48 divisors (see below), whose sum is σ = 28583715888. Its totient is φ = 5226500000.

The previous prime is 13066562489. The next prime is 13066562539. The reversal of 13066562500 is 526566031.

It can be written as a sum of positive squares in 8 ways, for example, as 7397376064 + 5669186436 = 86008^2 + 75294^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291594 + ... + 333406.

It is an arithmetic number, because the mean of its divisors is an integer number (595494081).

Almost surely, 2^13066562500 is an apocalyptic number.

13066562500 is a gapful number since it is divisible by the number (10) 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 13066562500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14291857944).

13066562500 is an abundant number, since it is smaller than the sum of its proper divisors (15517153388).

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

13066562500 is an frugal number, since it uses more digits than its factorization.

13066562500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41852 (or 41820 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 13066562500 in words is "thirteen billion, sixty-six million, five hundred sixty-two thousand, five hundred".