53384755817 has 4 divisors (see below), whose sum is σ = 53387441220. Its totient is φ = 53382070416.

The previous prime is 53384755789. The next prime is 53384755819. The reversal of 53384755817 is 71855748335.

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 15070999696 + 38313756121 = 122764^2 + 195739^2 .

It is a cyclic number.

It is not a de Polignac number, because 53384755817 - 2²⁶ = 53317646953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53384755819) 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, 1312658 + ... + 1352715.

It is an arithmetic number, because the mean of its divisors is an integer number (13346860305).

Almost surely, 2^53384755817 is an apocalyptic number.

It is an amenable number.

53384755817 is a deficient number, since it is larger than the sum of its proper divisors (2685403).

53384755817 is a wasteful number, since it uses less digits than its factorization.

53384755817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685402.

The product of its digits is 14112000, while the sum is 56.

The spelling of 53384755817 in words is "fifty-three billion, three hundred eighty-four million, seven hundred fifty-five thousand, eight hundred seventeen".