253787421545353 has 12 divisors (see below), whose sum is σ = 270643255514172. Its totient is φ = 237929338142720.

The previous prime is 253787421545327. The next prime is 253787421545369. The reversal of 253787421545353 is 353545124787352.

253787421545353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 119478606613129 + 134308814932224 = 10930627^2 + 11589168^2 .

It is a de Polignac number, because none of the positive numbers 2^k-253787421545353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253787421575353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1708402708 + ... + 1708551253.

It is an arithmetic number, because the mean of its divisors is an integer number (22553604626181).

Almost surely, 2^{253787421545353} is an apocalyptic number.

It is an amenable number.

253787421545353 is a deficient number, since it is larger than the sum of its proper divisors (16855833968819).

253787421545353 is a wasteful number, since it uses less digits than its factorization.

253787421545353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416954252 (or 3416954235 counting only the distinct ones).

The product of its digits is 423360000, while the sum is 64.

The spelling of 253787421545353 in words is "two hundred fifty-three trillion, seven hundred eighty-seven billion, four hundred twenty-one million, five hundred forty-five thousand, three hundred fifty-three".