253324818689 has 4 divisors (see below), whose sum is σ = 254938352724. Its totient is φ = 251711284656.

The previous prime is 253324818683. The next prime is 253324818697. The reversal of 253324818689 is 986818423352.

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 139069326400 + 114255492289 = 372920^2 + 338017^2 .

It is a cyclic number.

It is not a de Polignac number, because 253324818689 - 2²⁰ = 253323770113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253324818683) 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, 806766782 + ... + 806767095.

It is an arithmetic number, because the mean of its divisors is an integer number (63734588181).

Almost surely, 2^253324818689 is an apocalyptic number.

It is an amenable number.

253324818689 is a deficient number, since it is larger than the sum of its proper divisors (1613534035).

253324818689 is a wasteful number, since it uses less digits than its factorization.

253324818689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613534034.

The product of its digits is 19906560, while the sum is 59.

The spelling of 253324818689 in words is "two hundred fifty-three billion, three hundred twenty-four million, eight hundred eighteen thousand, six hundred eighty-nine".