65539978828 has 6 divisors (see below), whose sum is σ = 114694962956. Its totient is φ = 32769989412.

The previous prime is 65539978799. The next prime is 65539978871. The reversal of 65539978828 is 82887993556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8192497350 + ... + 8192497357.

Almost surely, 2^65539978828 is an apocalyptic number.

It is an amenable number.

65539978828 is a deficient number, since it is larger than the sum of its proper divisors (49154984128).

65539978828 is a wasteful number, since it uses less digits than its factorization.

65539978828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16384994711 (or 16384994709 counting only the distinct ones).

The product of its digits is 261273600, while the sum is 70.

The spelling of 65539978828 in words is "sixty-five billion, five hundred thirty-nine million, nine hundred seventy-eight thousand, eight hundred twenty-eight".