65707800461688 has 128 divisors (see below), whose sum is σ = 205171227486720. Its totient is φ = 17036320028160.

The previous prime is 65707800461671. The next prime is 65707800461711. The reversal of 65707800461688 is 88616400870756.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30888231 + ... + 32946902.

It is an arithmetic number, because the mean of its divisors is an integer number (1602900214740).

Almost surely, 2^{65707800461688} is an apocalyptic number.

It is an amenable number.

65707800461688 is an abundant number, since it is smaller than the sum of its proper divisors (139463427025032).

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

65707800461688 is a wasteful number, since it uses less digits than its factorization.

65707800461688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63835717 (or 63835713 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 66.

The spelling of 65707800461688 in words is "sixty-five trillion, seven hundred seven billion, eight hundred million, four hundred sixty-one thousand, six hundred eighty-eight".