84656279965 has 4 divisors (see below), whose sum is σ = 101587535964. Its totient is φ = 67725023968.

The previous prime is 84656279959. The next prime is 84656280013. The reversal of 84656279965 is 56997265648.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20170248484 + 64486031481 = 142022^2 + 253941^2 .

It is a cyclic number.

It is not a de Polignac number, because 84656279965 - 2¹¹ = 84656277917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84656279965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8465627992 + ... + 8465628001.

It is an arithmetic number, because the mean of its divisors is an integer number (25396883991).

Almost surely, 2^84656279965 is an apocalyptic number.

It is an amenable number.

84656279965 is a deficient number, since it is larger than the sum of its proper divisors (16931255999).

84656279965 is a wasteful number, since it uses less digits than its factorization.

84656279965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16931255998.

The product of its digits is 195955200, while the sum is 67.

The spelling of 84656279965 in words is "eighty-four billion, six hundred fifty-six million, two hundred seventy-nine thousand, nine hundred sixty-five".