115234640128 has 18 divisors (see below), whose sum is σ = 230019145454. Its totient is φ = 57617319936.

The previous prime is 115234640113. The next prime is 115234640137. The reversal of 115234640128 is 821046432511.

It can be written as a sum of positive squares in only one way, i.e., 59825246464 + 55409393664 = 244592^2 + 235392^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225067401 + ... + 225067912.

Almost surely, 2^115234640128 is an apocalyptic number.

It is an amenable number.

115234640128 is a deficient number, since it is larger than the sum of its proper divisors (114784505326).

115234640128 is an frugal number, since it uses more digits than its factorization.

115234640128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450135329 (or 450135315 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 115234640128 in words is "one hundred fifteen billion, two hundred thirty-four million, six hundred forty thousand, one hundred twenty-eight".