65139986475 has 72 divisors (see below), whose sum is σ = 125036482272. Its totient is φ = 32332608000.

The previous prime is 65139986467. The next prime is 65139986531. The reversal of 65139986475 is 57468993156.

65139986475 is a `hidden beast` number, since 6 + 51 + 39 + 9 + 86 + 475 = 666.

It is not a de Polignac number, because 65139986475 - 2³ = 65139986467 is a prime.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 21375 + ... + 361575.

Almost surely, 2^65139986475 is an apocalyptic number.

65139986475 is a deficient number, since it is larger than the sum of its proper divisors (59896495797).

65139986475 is a wasteful number, since it uses less digits than its factorization.

65139986475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340277 (or 340269 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 63.

The spelling of 65139986475 in words is "sixty-five billion, one hundred thirty-nine million, nine hundred eighty-six thousand, four hundred seventy-five".