65525818556 has 48 divisors (see below), whose sum is σ = 125549829888. Its totient is φ = 29676326400.

The previous prime is 65525818549. The next prime is 65525818601. The reversal of 65525818556 is 65581852556.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 15484961 + ... + 15489191.

It is an arithmetic number, because the mean of its divisors is an integer number (2615621456).

Almost surely, 2^65525818556 is an apocalyptic number.

It is an amenable number.

65525818556 is a deficient number, since it is larger than the sum of its proper divisors (60024011332).

65525818556 is a wasteful number, since it uses less digits than its factorization.

65525818556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442 (or 5440 counting only the distinct ones).

The product of its digits is 14400000, while the sum is 56.

The spelling of 65525818556 in words is "sixty-five billion, five hundred twenty-five million, eight hundred eighteen thousand, five hundred fifty-six".