253426344644 has 24 divisors (see below), whose sum is σ = 488511162048. Its totient is φ = 114075404640.

The previous prime is 253426344631. The next prime is 253426344671. The reversal of 253426344644 is 446443624352.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27955127 + ... + 27964190.

It is an arithmetic number, because the mean of its divisors is an integer number (20354631752).

Almost surely, 2^253426344644 is an apocalyptic number.

It is an amenable number.

253426344644 is a deficient number, since it is larger than the sum of its proper divisors (235084817404).

253426344644 is a wasteful number, since it uses less digits than its factorization.

253426344644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55919435 (or 55919433 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 47.

Adding to 253426344644 its reverse (446443624352), we get a palindrome (699869968996).

The spelling of 253426344644 in words is "two hundred fifty-three billion, four hundred twenty-six million, three hundred forty-four thousand, six hundred forty-four".