115512511140405 has 48 divisors (see below), whose sum is σ = 211070984641920. Its totient is φ = 58278005794944.

The previous prime is 115512511140319. The next prime is 115512511140409. The reversal of 115512511140405 is 504041115215511.

115512511140405 is a `hidden beast` number, since 1 + 1 + 5 + 512 + 51 + 11 + 40 + 40 + 5 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-115512511140405 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115512511140405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115512511140409) 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, 99201337 + ... + 100359006.

It is an arithmetic number, because the mean of its divisors is an integer number (4397312180040).

Almost surely, 2^{115512511140405} is an apocalyptic number.

115512511140405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115512511140405 is a deficient number, since it is larger than the sum of its proper divisors (95558473501515).

115512511140405 is a wasteful number, since it uses less digits than its factorization.

115512511140405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199561050 (or 199561047 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 36.

Adding to 115512511140405 its reverse (504041115215511), we get a palindrome (619553626355916).

The spelling of 115512511140405 in words is "one hundred fifteen trillion, five hundred twelve billion, five hundred eleven million, one hundred forty thousand, four hundred five".