13321053450 has 84 divisors (see below), whose sum is σ = 37148846838. Its totient is φ = 3552271200.

The previous prime is 13321053439. The next prime is 13321053469. The reversal of 13321053450 is 5435012331.

It can be written as a sum of positive squares in 3 ways, for example, as 8049857841 + 5271195609 = 89721^2 + 72603^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 146281 + ... + 219180.

Almost surely, 2^13321053450 is an apocalyptic number.

13321053450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13321053450 is an abundant number, since it is smaller than the sum of its proper divisors (23827793388).

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

13321053450 is an equidigital number, since it uses as much as digits as its factorization.

13321053450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365491 (or 365471 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 13321053450 its reverse (5435012331), we get a palindrome (18756065781).

The spelling of 13321053450 in words is "thirteen billion, three hundred twenty-one million, fifty-three thousand, four hundred fifty".