1253044213040 has 80 divisors (see below), whose sum is σ = 3087515636352. Its totient is φ = 471303708672.

The previous prime is 1253044212997. The next prime is 1253044213051. The reversal of 1253044213040 is 403124403521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1253044212994 and 1253044213012.

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 15 ways as a sum of consecutive naturals, for example, 1071977 + ... + 1911863.

Almost surely, 2^{1253044213040} is an apocalyptic number.

1253044213040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253044213040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1543757818176).

1253044213040 is an abundant number, since it is smaller than the sum of its proper divisors (1834471423312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253044213040 is a wasteful number, since it uses less digits than its factorization.

1253044213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841014 (or 841008 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 1253044213040 its reverse (403124403521), we get a palindrome (1656168616561).

The spelling of 1253044213040 in words is "one trillion, two hundred fifty-three billion, forty-four million, two hundred thirteen thousand, forty".