65836858145 has 4 divisors (see below), whose sum is σ = 79004229780. Its totient is φ = 52669486512.

The previous prime is 65836858099. The next prime is 65836858147. The reversal of 65836858145 is 54185863856.

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 7848365281 + 57988492864 = 88591^2 + 240808^2 .

It is a cyclic number.

It is not a de Polignac number, because 65836858145 - 2¹⁴ = 65836841761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65836858147) by changing a digit.

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, 6583685810 + ... + 6583685819.

It is an arithmetic number, because the mean of its divisors is an integer number (19751057445).

Almost surely, 2^65836858145 is an apocalyptic number.

It is an amenable number.

65836858145 is a deficient number, since it is larger than the sum of its proper divisors (13167371635).

65836858145 is a wasteful number, since it uses less digits than its factorization.

65836858145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13167371634.

The product of its digits is 27648000, while the sum is 59.

The spelling of 65836858145 in words is "sixty-five billion, eight hundred thirty-six million, eight hundred fifty-eight thousand, one hundred forty-five".