115405140224521 has 32 divisors (see below), whose sum is σ = 145014980198400. Its totient is φ = 89602524648000.

The previous prime is 115405140224513. The next prime is 115405140224531. The reversal of 115405140224521 is 125422041504511.

It is a happy number.

It is not a de Polignac number, because 115405140224521 - 2³ = 115405140224513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115405140224531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144850105 + ... + 145644646.

It is an arithmetic number, because the mean of its divisors is an integer number (4531718131200).

Almost surely, 2^{115405140224521} is an apocalyptic number.

It is an amenable number.

115405140224521 is a deficient number, since it is larger than the sum of its proper divisors (29609839973879).

115405140224521 is a wasteful number, since it uses less digits than its factorization.

115405140224521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290494909.

The product of its (nonzero) digits is 64000, while the sum is 37.

The spelling of 115405140224521 in words is "one hundred fifteen trillion, four hundred five billion, one hundred forty million, two hundred twenty-four thousand, five hundred twenty-one".