115405140404240 has 40 divisors (see below), whose sum is σ = 268321096618560. Its totient is φ = 46161343012736.

The previous prime is 115405140404219. The next prime is 115405140404273. The reversal of 115405140404240 is 42404041504511.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 115405140404240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5916974 + ... + 16304013.

It is an arithmetic number, because the mean of its divisors is an integer number (6708027415464).

Almost surely, 2^{115405140404240} is an apocalyptic number.

115405140404240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115405140404240 is an abundant number, since it is smaller than the sum of its proper divisors (152915956214320).

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

115405140404240 is a wasteful number, since it uses less digits than its factorization.

115405140404240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22285919 (or 22285913 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 115405140404240 its reverse (42404041504511), we get a palindrome (157809181908751).

The spelling of 115405140404240 in words is "one hundred fifteen trillion, four hundred five billion, one hundred forty million, four hundred four thousand, two hundred forty".