53143515065 has 16 divisors (see below), whose sum is σ = 65051766480. Its totient is φ = 41666814720.

The previous prime is 53143515031. The next prime is 53143515079. The reversal of 53143515065 is 56051534135.

It can be written as a sum of positive squares in 8 ways, for example, as 14241080896 + 38902434169 = 119336^2 + 197237^2 .

It is not a de Polignac number, because 53143515065 - 2²⁴ = 53126737849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230030 + ... + 398999.

It is an arithmetic number, because the mean of its divisors is an integer number (4065735405).

Almost surely, 2^53143515065 is an apocalyptic number.

It is an amenable number.

53143515065 is a deficient number, since it is larger than the sum of its proper divisors (11908251415).

53143515065 is a wasteful number, since it uses less digits than its factorization.

53143515065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629372.

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 53143515065 in words is "fifty-three billion, one hundred forty-three million, five hundred fifteen thousand, sixty-five".