11505040243320 has 128 divisors (see below), whose sum is σ = 37173597834240. Its totient is φ = 2831745692160.

The previous prime is 11505040243271. The next prime is 11505040243351. The reversal of 11505040243320 is 2334204050511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16651377 + ... + 17328543.

It is an arithmetic number, because the mean of its divisors is an integer number (290418733080).

Almost surely, 2^{11505040243320} is an apocalyptic number.

11505040243320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11505040243320 is an abundant number, since it is smaller than the sum of its proper divisors (25668557590920).

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

11505040243320 is a wasteful number, since it uses less digits than its factorization.

11505040243320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688085 (or 688081 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 11505040243320 its reverse (2334204050511), we get a palindrome (13839244293831).

The spelling of 11505040243320 in words is "eleven trillion, five hundred five billion, forty million, two hundred forty-three thousand, three hundred twenty".