65680109232 has 80 divisors (see below), whose sum is σ = 172980366048. Its totient is φ = 21467197440.

The previous prime is 65680109227. The next prime is 65680109233. The reversal of 65680109232 is 23290108656.

It is not an unprimeable number, because it can be changed into a prime (65680109233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4727448 + ... + 4741320.

Almost surely, 2^65680109232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65680109232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86490183024).

65680109232 is an abundant number, since it is smaller than the sum of its proper divisors (107300256816).

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

65680109232 is a wasteful number, since it uses less digits than its factorization.

65680109232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15798 (or 15792 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 65680109232 in words is "sixty-five billion, six hundred eighty million, one hundred nine thousand, two hundred thirty-two".