243130135245615 has 96 divisors (see below), whose sum is σ = 427106403090432. Its totient is φ = 127933253280000.

The previous prime is 243130135245611. The next prime is 243130135245629. The reversal of 243130135245615 is 516542531031342.

243130135245615 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 3 + 0 + 1 + 3 + 5 + 24 + 5 + 615 = 666.

It is not a de Polignac number, because 243130135245615 - 2² = 243130135245611 is a prime.

It is a super-2 number, since 2×243130135245615² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243130135245611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3515896290 + ... + 3515965440.

It is an arithmetic number, because the mean of its divisors is an integer number (4449025032192).

Almost surely, 2^{243130135245615} is an apocalyptic number.

243130135245615 is a deficient number, since it is larger than the sum of its proper divisors (183976267844817).

243130135245615 is a wasteful number, since it uses less digits than its factorization.

243130135245615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72701 (or 72698 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

Adding to 243130135245615 its reverse (516542531031342), we get a palindrome (759672666276957).

The spelling of 243130135245615 in words is "two hundred forty-three trillion, one hundred thirty billion, one hundred thirty-five million, two hundred forty-five thousand, six hundred fifteen".