115120205145 has 48 divisors (see below), whose sum is σ = 218098550592. Its totient is φ = 55709009280.

The previous prime is 115120205143. The next prime is 115120205159. The reversal of 115120205145 is 541502021511.

It is a happy number.

115120205145 is a `hidden beast` number, since 1 + 1 + 5 + 120 + 20 + 514 + 5 = 666.

It is not a de Polignac number, because 115120205145 - 2¹ = 115120205143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115120205143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36547 + ... + 481223.

It is an arithmetic number, because the mean of its divisors is an integer number (4543719804).

Almost surely, 2^115120205145 is an apocalyptic number.

115120205145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115120205145 is a deficient number, since it is larger than the sum of its proper divisors (102978345447).

115120205145 is a wasteful number, since it uses less digits than its factorization.

115120205145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445222 (or 445219 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 115120205145 its reverse (541502021511), we get a palindrome (656622226656).

The spelling of 115120205145 in words is "one hundred fifteen billion, one hundred twenty million, two hundred five thousand, one hundred forty-five".