65397666679356 has 48 divisors (see below), whose sum is σ = 168472411890048. Its totient is φ = 19578709992000.

The previous prime is 65397666679337. The next prime is 65397666679361.

65397666679356 is nontrivially palindromic in base 10.

65397666679356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2984548495 + ... + 2984570406.

It is an arithmetic number, because the mean of its divisors is an integer number (3509841914376).

Almost surely, 2^{65397666679356} is an apocalyptic number.

65397666679356 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

65397666679356 is an abundant number, since it is smaller than the sum of its proper divisors (103074745210692).

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

65397666679356 is a wasteful number, since it uses less digits than its factorization.

65397666679356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5969119002 (or 5969119000 counting only the distinct ones).

The product of its digits is 41664974400, while the sum is 84.

The spelling of 65397666679356 in words is "sixty-five trillion, three hundred ninety-seven billion, six hundred sixty-six million, six hundred seventy-nine thousand, three hundred fifty-six".