253745734547 has 4 divisors (see below), whose sum is σ = 253782671376. Its totient is φ = 253708797720.

The previous prime is 253745734531. The next prime is 253745734631. The reversal of 253745734547 is 745437547352.

253745734547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 253745734547 - 2⁴ = 253745734531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253745734492 and 253745734501.

It is not an unprimeable number, because it can be changed into a prime (253745734247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18458108 + ... + 18471849.

It is an arithmetic number, because the mean of its divisors is an integer number (63445667844).

Almost surely, 2^253745734547 is an apocalyptic number.

253745734547 is a deficient number, since it is larger than the sum of its proper divisors (36936829).

253745734547 is an equidigital number, since it uses as much as digits as its factorization.

253745734547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36936828.

The product of its digits is 49392000, while the sum is 56.

The spelling of 253745734547 in words is "two hundred fifty-three billion, seven hundred forty-five million, seven hundred thirty-four thousand, five hundred forty-seven".