65142757647 has 48 divisors (see below), whose sum is σ = 103031169696. Its totient is φ = 39333888000.

The previous prime is 65142757643. The next prime is 65142757663. The reversal of 65142757647 is 74675724156.

65142757647 is a `hidden beast` number, since 6 + 5 + 1 + 4 + 27 + 576 + 47 = 666.

It is not a de Polignac number, because 65142757647 - 2² = 65142757643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65142757593 and 65142757602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65142757643) 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, 41945623 + ... + 41947175.

It is an arithmetic number, because the mean of its divisors is an integer number (2146482702).

Almost surely, 2^65142757647 is an apocalyptic number.

65142757647 is a deficient number, since it is larger than the sum of its proper divisors (37888412049).

65142757647 is a wasteful number, since it uses less digits than its factorization.

65142757647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872 (or 2869 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The spelling of 65142757647 in words is "sixty-five billion, one hundred forty-two million, seven hundred fifty-seven thousand, six hundred forty-seven".