253403232644 has 12 divisors (see below), whose sum is σ = 443520890064. Its totient is φ = 126682978344.

The previous prime is 253403232623. The next prime is 253403232671. The reversal of 253403232644 is 446232304352.

It is a junction number, because it is equal to n+sod(n) for n = 253403232598 and 253403232607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4628882 + ... + 4683305.

It is an arithmetic number, because the mean of its divisors is an integer number (36960074172).

Almost surely, 2^253403232644 is an apocalyptic number.

It is an amenable number.

253403232644 is a deficient number, since it is larger than the sum of its proper divisors (190117657420).

253403232644 is a wasteful number, since it uses less digits than its factorization.

253403232644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9318994 (or 9318992 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 38.

Adding to 253403232644 its reverse (446232304352), we get a palindrome (699635536996).

The spelling of 253403232644 in words is "two hundred fifty-three billion, four hundred three million, two hundred thirty-two thousand, six hundred forty-four".