65686830336 has 72 divisors (see below), whose sum is σ = 194247533760. Its totient is φ = 21895607808.

The previous prime is 65686830331. The next prime is 65686830337. The reversal of 65686830336 is 63303868656.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65686830331) by changing a digit.

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, 4744740 + ... + 4758563.

Almost surely, 2^65686830336 is an apocalyptic number.

It is an amenable number.

65686830336 is an abundant number, since it is smaller than the sum of its proper divisors (128560703424).

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

65686830336 is an equidigital number, since it uses as much as digits as its factorization.

65686830336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9503328 (or 9503308 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 54.

The spelling of 65686830336 in words is "sixty-five billion, six hundred eighty-six million, eight hundred thirty thousand, three hundred thirty-six".