13044021500 has 24 divisors (see below), whose sum is σ = 28488144048. Its totient is φ = 5217608400.

The previous prime is 13044021469. The next prime is 13044021509. The reversal of 13044021500 is 512044031.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044021509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13043522 + ... + 13044521.

It is an arithmetic number, because the mean of its divisors is an integer number (1187006002).

Almost surely, 2^13044021500 is an apocalyptic number.

13044021500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13044021500 is an abundant number, since it is smaller than the sum of its proper divisors (15444122548).

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

13044021500 is a wasteful number, since it uses less digits than its factorization.

13044021500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26088062 (or 26088050 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 13044021500 its reverse (512044031), we get a palindrome (13556065531).

The spelling of 13044021500 in words is "thirteen billion, forty-four million, twenty-one thousand, five hundred".