65965888856956 has 48 divisors (see below), whose sum is σ = 128635116825600. Its totient is φ = 29341787181120.

The previous prime is 65965888856947. The next prime is 65965888856977.

65965888856956 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (94).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10246666 + ... + 15392398.

It is an arithmetic number, because the mean of its divisors is an integer number (2679898267200).

Almost surely, 2^{65965888856956} is an apocalyptic number.

It is an amenable number.

65965888856956 is a deficient number, since it is larger than the sum of its proper divisors (62669227968644).

65965888856956 is a wasteful number, since it uses less digits than its factorization.

65965888856956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151994 (or 5151992 counting only the distinct ones).

The product of its digits is 268738560000, while the sum is 94.

The spelling of 65965888856956 in words is "sixty-five trillion, nine hundred sixty-five billion, eight hundred eighty-eight million, eight hundred fifty-six thousand, nine hundred fifty-six".