65113636465 has 4 divisors (see below), whose sum is σ = 78136363764. Its totient is φ = 52090909168.

The previous prime is 65113636451. The next prime is 65113636493. The reversal of 65113636465 is 56463631156.

It is a happy number.

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 15546847969 + 49566788496 = 124687^2 + 222636^2 .

It is a cyclic number.

It is not a de Polignac number, because 65113636465 - 2⁷ = 65113636337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6511363642 + ... + 6511363651.

It is an arithmetic number, because the mean of its divisors is an integer number (19534090941).

Almost surely, 2^65113636465 is an apocalyptic number.

It is an amenable number.

65113636465 is a deficient number, since it is larger than the sum of its proper divisors (13022727299).

65113636465 is a wasteful number, since it uses less digits than its factorization.

65113636465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13022727298.

The product of its digits is 1166400, while the sum is 46.

The spelling of 65113636465 in words is "sixty-five billion, one hundred thirteen million, six hundred thirty-six thousand, four hundred sixty-five".