13021975800 has 192 divisors, whose sum is σ = 45084837600. Its totient is φ = 3454617600.

The previous prime is 13021975789. The next prime is 13021975807. The reversal of 13021975800 is 857912031.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021975807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1057680 + ... + 1069920.

Almost surely, 2^13021975800 is an apocalyptic number.

13021975800 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 13021975800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22542418800).

13021975800 is an abundant number, since it is smaller than the sum of its proper divisors (32062861800).

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

13021975800 is a wasteful number, since it uses less digits than its factorization.

13021975800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12463 (or 12448 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 13021975800 in words is "thirteen billion, twenty-one million, nine hundred seventy-five thousand, eight hundred".