115143224521 has 8 divisors (see below), whose sum is σ = 124097516424. Its totient is φ = 106202807040.

The previous prime is 115143224513. The next prime is 115143224681. The reversal of 115143224521 is 125422341511.

It can be written as a sum of positive squares in 4 ways, for example, as 7860772921 + 107282451600 = 88661^2 + 327540^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115143224521 - 2³ = 115143224513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115143224321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3451360 + ... + 3484561.

It is an arithmetic number, because the mean of its divisors is an integer number (15512189553).

Almost surely, 2^115143224521 is an apocalyptic number.

It is an amenable number.

115143224521 is a deficient number, since it is larger than the sum of its proper divisors (8954291903).

115143224521 is a wasteful number, since it uses less digits than its factorization.

115143224521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6937211.

The product of its digits is 9600, while the sum is 31.

The spelling of 115143224521 in words is "one hundred fifteen billion, one hundred forty-three million, two hundred twenty-four thousand, five hundred twenty-one".