1311255603652 has 36 divisors (see below), whose sum is σ = 2356405400496. Its totient is φ = 638444766960.

The previous prime is 1311255603611. The next prime is 1311255603667. The reversal of 1311255603652 is 2563065521131.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 2180263 + ... + 2715889.

Almost surely, 2^{1311255603652} is an apocalyptic number.

It is an amenable number.

1311255603652 is a deficient number, since it is larger than the sum of its proper divisors (1045149796844).

1311255603652 is a wasteful number, since it uses less digits than its factorization.

1311255603652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536048 (or 536003 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 1311255603652 in words is "one trillion, three hundred eleven billion, two hundred fifty-five million, six hundred three thousand, six hundred fifty-two".