115540215451 has 4 divisors (see below), whose sum is σ = 115601707600. Its totient is φ = 115478723304.

The previous prime is 115540215443. The next prime is 115540215463. The reversal of 115540215451 is 154512045511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115540215451 - 2³ = 115540215443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115540215491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30743256 + ... + 30747013.

It is an arithmetic number, because the mean of its divisors is an integer number (28900426900).

Almost surely, 2^115540215451 is an apocalyptic number.

115540215451 is a deficient number, since it is larger than the sum of its proper divisors (61492149).

115540215451 is an equidigital number, since it uses as much as digits as its factorization.

115540215451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61492148.

The product of its (nonzero) digits is 20000, while the sum is 34.

The spelling of 115540215451 in words is "one hundred fifteen billion, five hundred forty million, two hundred fifteen thousand, four hundred fifty-one".