65238522688 has 14 divisors (see below), whose sum is σ = 129457693586. Its totient is φ = 32619261312.

The previous prime is 65238522659. The next prime is 65238522691. The reversal of 65238522688 is 88622583256.

It can be written as a sum of positive squares in only one way, i.e., 55869831424 + 9368691264 = 236368^2 + 96792^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509675895 + ... + 509676022.

Almost surely, 2^65238522688 is an apocalyptic number.

It is an amenable number.

65238522688 is a deficient number, since it is larger than the sum of its proper divisors (64219170898).

65238522688 is a wasteful number, since it uses less digits than its factorization.

65238522688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019351929 (or 1019351919 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 55.

The spelling of 65238522688 in words is "sixty-five billion, two hundred thirty-eight million, five hundred twenty-two thousand, six hundred eighty-eight".