13000543500 has 192 divisors, whose sum is σ = 43349289984. Its totient is φ = 2965824000.

The previous prime is 13000543481. The next prime is 13000543531. The reversal of 13000543500 is 534500031.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7989687 + ... + 7991313.

It is an arithmetic number, because the mean of its divisors is an integer number (225777552).

Almost surely, 2^13000543500 is an apocalyptic number.

13000543500 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 13000543500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21674644992).

13000543500 is an abundant number, since it is smaller than the sum of its proper divisors (30348746484).

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

13000543500 is a wasteful number, since it uses less digits than its factorization.

13000543500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The spelling of 13000543500 in words is "thirteen billion, five hundred forty-three thousand, five hundred".