53780338559 has 4 divisors (see below), whose sum is σ = 56943887904. Its totient is φ = 50616789216.

The previous prime is 53780338553. The next prime is 53780338589. The reversal of 53780338559 is 95583308735.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53780338559 - 2¹⁶ = 53780273023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53780338553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1581774647 + ... + 1581774680.

It is an arithmetic number, because the mean of its divisors is an integer number (14235971976).

Almost surely, 2^53780338559 is an apocalyptic number.

53780338559 is a deficient number, since it is larger than the sum of its proper divisors (3163549345).

53780338559 is a wasteful number, since it uses less digits than its factorization.

53780338559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163549344.

The product of its (nonzero) digits is 13608000, while the sum is 56.

The spelling of 53780338559 in words is "fifty-three billion, seven hundred eighty million, three hundred thirty-eight thousand, five hundred fifty-nine".