115520040400 has 120 divisors (see below), whose sum is σ = 284107887360. Its totient is φ = 45118625280.

The previous prime is 115520040397. The next prime is 115520040403. The reversal of 115520040400 is 4040025511.

It is an interprime number because it is at equal distance from previous prime (115520040397) and next prime (115520040403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115520040403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8246202 + ... + 8260198.

It is an arithmetic number, because the mean of its divisors is an integer number (2367565728).

Almost surely, 2^115520040400 is an apocalyptic number.

115520040400 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 115520040400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142053943680).

115520040400 is an abundant number, since it is smaller than the sum of its proper divisors (168587846960).

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

115520040400 is a wasteful number, since it uses less digits than its factorization.

115520040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14501 (or 14490 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 115520040400 its reverse (4040025511), we get a palindrome (119560065911).

The spelling of 115520040400 in words is "one hundred fifteen billion, five hundred twenty million, forty thousand, four hundred".