65518386938 has 16 divisors (see below), whose sum is σ = 101686860000. Its totient is φ = 31623220272.

The previous prime is 65518386929. The next prime is 65518386949. The reversal of 65518386938 is 83968381556.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184973 + ... + 406511.

It is an arithmetic number, because the mean of its divisors is an integer number (6355428750).

Almost surely, 2^65518386938 is an apocalyptic number.

65518386938 is a deficient number, since it is larger than the sum of its proper divisors (36168473062).

65518386938 is a wasteful number, since it uses less digits than its factorization.

65518386938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226669.

The product of its digits is 37324800, while the sum is 62.

The spelling of 65518386938 in words is "sixty-five billion, five hundred eighteen million, three hundred eighty-six thousand, nine hundred thirty-eight".