11309205450 has 24 divisors (see below), whose sum is σ = 28046829888. Its totient is φ = 3015788080.

The previous prime is 11309205379. The next prime is 11309205461. The reversal of 11309205450 is 5450290311.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37697202 + ... + 37697501.

It is an arithmetic number, because the mean of its divisors is an integer number (1168617912).

Almost surely, 2^11309205450 is an apocalyptic number.

11309205450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11309205450 is an abundant number, since it is smaller than the sum of its proper divisors (16737624438).

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

11309205450 is a wasteful number, since it uses less digits than its factorization.

11309205450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75394718 (or 75394713 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 11309205450 its reverse (5450290311), we get a palindrome (16759495761).

The spelling of 11309205450 in words is "eleven billion, three hundred nine million, two hundred five thousand, four hundred fifty".