253328988947 has 4 divisors (see below), whose sum is σ = 260175718416. Its totient is φ = 246482259480.

The previous prime is 253328988853. The next prime is 253328988953. The reversal of 253328988947 is 749889823352.

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 253328988947 - 2¹⁴ = 253328972563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253328388947) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3423364679 + ... + 3423364752.

It is an arithmetic number, because the mean of its divisors is an integer number (65043929604).

Almost surely, 2^253328988947 is an apocalyptic number.

253328988947 is a deficient number, since it is larger than the sum of its proper divisors (6846729469).

253328988947 is an equidigital number, since it uses as much as digits as its factorization.

253328988947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6846729468.

The product of its digits is 209018880, while the sum is 68.

The spelling of 253328988947 in words is "two hundred fifty-three billion, three hundred twenty-eight million, nine hundred eighty-eight thousand, nine hundred forty-seven".