4782723563521 has 4 divisors (see below), whose sum is σ = 4782978348372. Its totient is φ = 4782468778672.

The previous prime is 4782723563491. The next prime is 4782723563531. The reversal of 4782723563521 is 1253653272874.

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 4699525929921 + 83197633600 = 2167839^2 + 288440^2 .

It is a cyclic number.

It is not a de Polignac number, because 4782723563521 - 2⁵ = 4782723563489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4782723563531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127364266 + ... + 127401811.

It is an arithmetic number, because the mean of its divisors is an integer number (1195744587093).

Almost surely, 2^{4782723563521} is an apocalyptic number.

It is an amenable number.

4782723563521 is a deficient number, since it is larger than the sum of its proper divisors (254784851).

4782723563521 is a wasteful number, since it uses less digits than its factorization.

4782723563521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254784850.

The product of its digits is 16934400, while the sum is 55.

The spelling of 4782723563521 in words is "four trillion, seven hundred eighty-two billion, seven hundred twenty-three million, five hundred sixty-three thousand, five hundred twenty-one".