65650657656 has 32 divisors (see below), whose sum is σ = 164137271760. Its totient is φ = 21882135552.

The previous prime is 65650657643. The next prime is 65650657661. The reversal of 65650657656 is 65675605656.

It is a happy number.

It is a super-2 number, since 2×65650657656² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65650657596 and 65650657605.

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 7 ways as a sum of consecutive naturals, for example, 330216 + ... + 490248.

Almost surely, 2^65650657656 is an apocalyptic number.

It is an amenable number.

65650657656 is an abundant number, since it is smaller than the sum of its proper divisors (98486614104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65650657656 is a wasteful number, since it uses less digits than its factorization.

65650657656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177135 (or 177131 counting only the distinct ones).

The product of its (nonzero) digits is 34020000, while the sum is 57.

The spelling of 65650657656 in words is "sixty-five billion, six hundred fifty million, six hundred fifty-seven thousand, six hundred fifty-six".