1311051604660 has 24 divisors (see below), whose sum is σ = 3146523851520. Its totient is φ = 449503407264.

The previous prime is 1311051604619. The next prime is 1311051604823. The reversal of 1311051604660 is 664061501131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4682327020 + ... + 4682327299.

It is an arithmetic number, because the mean of its divisors is an integer number (131105160480).

Almost surely, 2^{1311051604660} is an apocalyptic number.

1311051604660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311051604660 is an abundant number, since it is smaller than the sum of its proper divisors (1835472246860).

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

1311051604660 is a wasteful number, since it uses less digits than its factorization.

1311051604660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9364654335 (or 9364654333 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 1311051604660 in words is "one trillion, three hundred eleven billion, fifty-one million, six hundred four thousand, six hundred sixty".