115501511400 has 384 divisors, whose sum is σ = 404573927040. Its totient is φ = 27016704000.

The previous prime is 115501511351. The next prime is 115501511443. The reversal of 115501511400 is 4115105511.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21335094 + ... + 21340506.

It is an arithmetic number, because the mean of its divisors is an integer number (1053577935).

Almost surely, 2^115501511400 is an apocalyptic number.

115501511400 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 115501511400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202286963520).

115501511400 is an abundant number, since it is smaller than the sum of its proper divisors (289072415640).

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

115501511400 is a wasteful number, since it uses less digits than its factorization.

115501511400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 24.

Adding to 115501511400 its reverse (4115105511), we get a palindrome (119616616911).

The spelling of 115501511400 in words is "one hundred fifteen billion, five hundred one million, five hundred eleven thousand, four hundred".