53869446509 has 4 divisors (see below), whose sum is σ = 55727013660. Its totient is φ = 52011879360.

The previous prime is 53869446493. The next prime is 53869446577. The reversal of 53869446509 is 90564496835.

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 34032132484 + 19837314025 = 184478^2 + 140845^2 .

It is a cyclic number.

It is not a de Polignac number, because 53869446509 - 2⁴ = 53869446493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53869448509) 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, 928783532 + ... + 928783589.

It is an arithmetic number, because the mean of its divisors is an integer number (13931753415).

Almost surely, 2^53869446509 is an apocalyptic number.

It is an amenable number.

53869446509 is a deficient number, since it is larger than the sum of its proper divisors (1857567151).

53869446509 is a wasteful number, since it uses less digits than its factorization.

53869446509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857567150.

The product of its (nonzero) digits is 27993600, while the sum is 59.

The spelling of 53869446509 in words is "fifty-three billion, eight hundred sixty-nine million, four hundred forty-six thousand, five hundred nine".