65136015243 has 32 divisors (see below), whose sum is σ = 103941633600. Its totient is φ = 40075630848.

The previous prime is 65136015227. The next prime is 65136015257. The reversal of 65136015243 is 34251063156.

65136015243 is a `hidden beast` number, since 6 + 5 + 1 + 3 + 601 + 5 + 2 + 43 = 666.

It is not a de Polignac number, because 65136015243 - 2⁴ = 65136015227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65136015198 and 65136015207.

It is not an unprimeable number, because it can be changed into a prime (65136015283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2054113 + ... + 2085581.

It is an arithmetic number, because the mean of its divisors is an integer number (3248176050).

Almost surely, 2^65136015243 is an apocalyptic number.

65136015243 is a deficient number, since it is larger than the sum of its proper divisors (38805618357).

65136015243 is a wasteful number, since it uses less digits than its factorization.

65136015243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37388 (or 37382 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 65136015243 its reverse (34251063156), we get a palindrome (99387078399).

The spelling of 65136015243 in words is "sixty-five billion, one hundred thirty-six million, fifteen thousand, two hundred forty-three".