1311564041446 has 48 divisors (see below), whose sum is σ = 2063446056000. Its totient is φ = 625116061440.

The previous prime is 1311564041387. The next prime is 1311564041483. The reversal of 1311564041446 is 6441404651131.

It is a junction number, because it is equal to n+sod(n) for n = 1311564041399 and 1311564041408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65735880 + ... + 65755828.

It is an arithmetic number, because the mean of its divisors is an integer number (42988459500).

Almost surely, 2^{1311564041446} is an apocalyptic number.

1311564041446 is a deficient number, since it is larger than the sum of its proper divisors (751882014554).

1311564041446 is a wasteful number, since it uses less digits than its factorization.

1311564041446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20525 (or 20494 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

Adding to 1311564041446 its reverse (6441404651131), we get a palindrome (7752968692577).

The spelling of 1311564041446 in words is "one trillion, three hundred eleven billion, five hundred sixty-four million, forty-one thousand, four hundred forty-six".