1244457540556 has 12 divisors (see below), whose sum is σ = 2177840441392. Its totient is φ = 622217414448.

The previous prime is 1244457540551. The next prime is 1244457540583. The reversal of 1244457540556 is 6550457544421.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1244457540551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2589960 + ... + 3032623.

Almost surely, 2^{1244457540556} is an apocalyptic number.

It is an amenable number.

1244457540556 is a deficient number, since it is larger than the sum of its proper divisors (933382900836).

1244457540556 is a wasteful number, since it uses less digits than its factorization.

1244457540556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677920 (or 5677918 counting only the distinct ones).

The product of its (nonzero) digits is 13440000, while the sum is 52.

The spelling of 1244457540556 in words is "one trillion, two hundred forty-four billion, four hundred fifty-seven million, five hundred forty thousand, five hundred fifty-six".