115321453521 has 16 divisors (see below), whose sum is σ = 162996350400. Its totient is φ = 72274295808.

The previous prime is 115321453501. The next prime is 115321453529. The reversal of 115321453521 is 125354123511.

It is a de Polignac number, because none of the positive numbers 2^k-115321453521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115321453529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272376 + ... + 1359993.

It is an arithmetic number, because the mean of its divisors is an integer number (10187271900).

Almost surely, 2^115321453521 is an apocalyptic number.

It is an amenable number.

115321453521 is a deficient number, since it is larger than the sum of its proper divisors (47674896879).

115321453521 is a wasteful number, since it uses less digits than its factorization.

115321453521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633248.

The product of its digits is 18000, while the sum is 33.

The spelling of 115321453521 in words is "one hundred fifteen billion, three hundred twenty-one million, four hundred fifty-three thousand, five hundred twenty-one".