253684981855 has 16 divisors (see below), whose sum is σ = 314936301600. Its totient is φ = 195939192960.

The previous prime is 253684981853. The next prime is 253684981877. The reversal of 253684981855 is 558189486352.

253684981855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253684981855 - 2¹ = 253684981853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253684981853) 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 15 ways as a sum of consecutive naturals, for example, 3628216 + ... + 3697474.

It is an arithmetic number, because the mean of its divisors is an integer number (19683518850).

Almost surely, 2^253684981855 is an apocalyptic number.

253684981855 is a deficient number, since it is larger than the sum of its proper divisors (61251319745).

253684981855 is a wasteful number, since it uses less digits than its factorization.

253684981855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94554.

The product of its digits is 82944000, while the sum is 64.

The spelling of 253684981855 in words is "two hundred fifty-three billion, six hundred eighty-four million, nine hundred eighty-one thousand, eight hundred fifty-five".