65678287656 has 16 divisors (see below), whose sum is σ = 164195719200. Its totient is φ = 21892762544.

The previous prime is 65678287651. The next prime is 65678287657.

65678287656 is nontrivially palindromic in base 10.

65678287656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65678287651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368297636 + ... + 1368297683.

It is an arithmetic number, because the mean of its divisors is an integer number (10262232450).

Almost surely, 2^65678287656 is an apocalyptic number.

It is an amenable number.

65678287656 is an abundant number, since it is smaller than the sum of its proper divisors (98517431544).

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

65678287656 is a wasteful number, since it uses less digits than its factorization.

65678287656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736595328 (or 2736595324 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 66.

The spelling of 65678287656 in words is "sixty-five billion, six hundred seventy-eight million, two hundred eighty-seven thousand, six hundred fifty-six".