65835653880 has 32 divisors (see below), whose sum is σ = 197506962000. Its totient is φ = 17556174336.

The previous prime is 65835653879. The next prime is 65835653903. The reversal of 65835653880 is 8835653856.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65835653880.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 274315105 + ... + 274315344.

Almost surely, 2^65835653880 is an apocalyptic number.

65835653880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65835653880 is an abundant number, since it is smaller than the sum of its proper divisors (131671308120).

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

65835653880 is a wasteful number, since it uses less digits than its factorization.

65835653880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548630463 (or 548630459 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 57.

The spelling of 65835653880 in words is "sixty-five billion, eight hundred thirty-five million, six hundred fifty-three thousand, eight hundred eighty".