65112718540 has 24 divisors (see below), whose sum is σ = 138777558192. Its totient is φ = 25656354240.

The previous prime is 65112718537. The next prime is 65112718547. The reversal of 65112718540 is 4581721156.

It is a super-2 number, since 2×65112718540² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65112718493 and 65112718502.

It is not an unprimeable number, because it can be changed into a prime (65112718547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24294451 + ... + 24297130.

It is an arithmetic number, because the mean of its divisors is an integer number (5782398258).

Almost surely, 2^65112718540 is an apocalyptic number.

It is an amenable number.

65112718540 is an abundant number, since it is smaller than the sum of its proper divisors (73664839652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65112718540 is a wasteful number, since it uses less digits than its factorization.

65112718540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48591657 (or 48591655 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 65112718540 in words is "sixty-five billion, one hundred twelve million, seven hundred eighteen thousand, five hundred forty".