13021303650 has 96 divisors (see below), whose sum is σ = 32637911040. Its totient is φ = 3435405120.

The previous prime is 13021303637. The next prime is 13021303657. The reversal of 13021303650 is 5630312031.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13021303650.

It is not an unprimeable number, because it can be changed into a prime (13021303657) 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, 9124237 + ... + 9125663.

It is an arithmetic number, because the mean of its divisors is an integer number (339978240).

Almost surely, 2^13021303650 is an apocalyptic number.

13021303650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13021303650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16318955520).

13021303650 is an abundant number, since it is smaller than the sum of its proper divisors (19616607390).

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

13021303650 is a wasteful number, since it uses less digits than its factorization.

13021303650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048 (or 2043 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 13021303650 its reverse (5630312031), we get a palindrome (18651615681).

The spelling of 13021303650 in words is "thirteen billion, twenty-one million, three hundred three thousand, six hundred fifty".