53365818145 has 4 divisors (see below), whose sum is σ = 64038981780. Its totient is φ = 42692654512.

The previous prime is 53365818139. The next prime is 53365818151. The reversal of 53365818145 is 54181856335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54181856335 = 5 ⋅10836371267.

It is an interprime number because it is at equal distance from previous prime (53365818139) and next prime (53365818151).

It can be written as a sum of positive squares in 2 ways, for example, as 14852540641 + 38513277504 = 121871^2 + 196248^2 .

It is a cyclic number.

It is not a de Polignac number, because 53365818145 - 2⁹ = 53365817633 is a prime.

It is a super-2 number, since 2×53365818145² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5336581810 + ... + 5336581819.

It is an arithmetic number, because the mean of its divisors is an integer number (16009745445).

Almost surely, 2^53365818145 is an apocalyptic number.

It is an amenable number.

53365818145 is a deficient number, since it is larger than the sum of its proper divisors (10673163635).

53365818145 is a wasteful number, since it uses less digits than its factorization.

53365818145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673163634.

The product of its digits is 1728000, while the sum is 49.

The spelling of 53365818145 in words is "fifty-three billion, three hundred sixty-five million, eight hundred eighteen thousand, one hundred forty-five".