11309928640 has 112 divisors (see below), whose sum is σ = 29054767392. Its totient is φ = 4177412096.

The previous prime is 11309928607. The next prime is 11309928647. The reversal of 11309928640 is 4682990311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11309928647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268707 + ... + 307933.

It is an arithmetic number, because the mean of its divisors is an integer number (259417566).

Almost surely, 2^11309928640 is an apocalyptic number.

11309928640 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 11309928640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14527383696).

11309928640 is an abundant number, since it is smaller than the sum of its proper divisors (17744838752).

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

11309928640 is a wasteful number, since it uses less digits than its factorization.

11309928640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39314 (or 39304 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 11309928640 in words is "eleven billion, three hundred nine million, nine hundred twenty-eight thousand, six hundred forty".