253143555435 has 48 divisors (see below), whose sum is σ = 439747869600. Its totient is φ = 134713082880.

The previous prime is 253143555421. The next prime is 253143555461. The reversal of 253143555435 is 534555341352.

253143555435 is a `hidden beast` number, since 2 + 5 + 31 + 4 + 35 + 554 + 35 = 666.

253143555435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-253143555435 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 60602067 + ... + 60606243.

It is an arithmetic number, because the mean of its divisors is an integer number (9161413950).

Almost surely, 2^253143555435 is an apocalyptic number.

253143555435 is a deficient number, since it is larger than the sum of its proper divisors (186604314165).

253143555435 is a wasteful number, since it uses less digits than its factorization.

253143555435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6828 (or 6825 counting only the distinct ones).

The product of its digits is 2700000, while the sum is 45.

Adding to 253143555435 its reverse (534555341352), we get a palindrome (787698896787).

The spelling of 253143555435 in words is "two hundred fifty-three billion, one hundred forty-three million, five hundred fifty-five thousand, four hundred thirty-five".