1253313540244 has 6 divisors (see below), whose sum is σ = 2193298695434. Its totient is φ = 626656770120.

The previous prime is 1253313540229. The next prime is 1253313540247. The reversal of 1253313540244 is 4420453133521.

It can be written as a sum of positive squares in only one way, i.e., 1251180947844 + 2132592400 = 1118562^2 + 46180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253313540247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156664192527 + ... + 156664192534.

Almost surely, 2^{1253313540244} is an apocalyptic number.

It is an amenable number.

1253313540244 is a deficient number, since it is larger than the sum of its proper divisors (939985155190).

1253313540244 is a wasteful number, since it uses less digits than its factorization.

1253313540244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313328385065 (or 313328385063 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 1253313540244 its reverse (4420453133521), we get a palindrome (5673766673765).

The spelling of 1253313540244 in words is "one trillion, two hundred fifty-three billion, three hundred thirteen million, five hundred forty thousand, two hundred forty-four".