253803908943 has 96 divisors (see below), whose sum is σ = 411957052416. Its totient is φ = 149581949184.

The previous prime is 253803908909. The next prime is 253803908957. The reversal of 253803908943 is 349809308352.

It is a happy number.

It is not a de Polignac number, because 253803908943 - 2¹³ = 253803900751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253803908943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253803908993) 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 95 ways as a sum of consecutive naturals, for example, 48834021 + ... + 48839217.

It is an arithmetic number, because the mean of its divisors is an integer number (4291219296).

Almost surely, 2^253803908943 is an apocalyptic number.

253803908943 is a deficient number, since it is larger than the sum of its proper divisors (158153143473).

253803908943 is a wasteful number, since it uses less digits than its factorization.

253803908943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453 (or 5450 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 253803908943 in words is "two hundred fifty-three billion, eight hundred three million, nine hundred eight thousand, nine hundred forty-three".