13021255800 has 288 divisors, whose sum is σ = 50583012480. Its totient is φ = 2940192000.

The previous prime is 13021255789. The next prime is 13021255823. The reversal of 13021255800 is 855212031.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1039575 + ... + 1052025.

It is an arithmetic number, because the mean of its divisors is an integer number (175635460).

Almost surely, 2^13021255800 is an apocalyptic number.

13021255800 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 13021255800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25291506240).

13021255800 is an abundant number, since it is smaller than the sum of its proper divisors (37561756680).

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

13021255800 is a wasteful number, since it uses less digits than its factorization.

13021255800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12563 (or 12551 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 13021255800 its reverse (855212031), we get a palindrome (13876467831).

The spelling of 13021255800 in words is "thirteen billion, twenty-one million, two hundred fifty-five thousand, eight hundred".